TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Marković, Maja
AU  - Spasojević Savković, Milica
AU  - Savić, Sanja
AU  - Kalagasidis Krušić, Melina
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6958
AB  - Biocomposites are materials that are composed of a matrix and fillers both of which derived from renewable resources. They offer an alternative to traditional petroleum-based composites and have gained interest due to potential environmental benefits and sustainability. Guided by this idea, itaconic and succinic acids and propylene glycol were used in the synthesis of a biobased unsaturated polyester, diluted with biobased reactive diluent, dimethyl itaconate, to cure fully biobased unsaturated polyester resin (UPR). Despite having a low environmental impact, the mechanical properties of biobased UPRs are not considered commercially viable compared to their petroleum-based counterparts. To lessen the discrepancy between the two, nanocellulose (NC) was incorporated into the biobased UPR in two ways. Firstly, NC was added during synthesis, while secondly it was added after the synthesis of UPR was completed. Both series implied the use of three different quantities of NC (1, 2, 3 wt.%). FTIR spectroscopy, gel content analysis, SEM, dynamic mechanical analysis, and uniaxial tensile test were used to characterize obtained biocomposites. It was demonstrated that when NC was added during the synthesis, it had no effect on UPR viscosity. On the other hand, adding NC after the synthesis significantly increased viscosity. Overall results showed that higher quantities of NC increased tensile strength, storage modulus at lower frequencies, and decreased glass transition temperature.
PB  - Nice, France : Université Côte d’Azur, University of the French Riviera
C3  - Book of Abstracts - 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France
T1  - Advancing Biocomposites: Introduction of Nanocellulose as a Sustainable Filler of Biobased Unsaturated Polyester Resins
SP  - 52
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_cer_6958
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Marković, Maja and Spasojević Savković, Milica and Savić, Sanja and Kalagasidis Krušić, Melina",
year = "2023",
abstract = "Biocomposites are materials that are composed of a matrix and fillers both of which derived from renewable resources. They offer an alternative to traditional petroleum-based composites and have gained interest due to potential environmental benefits and sustainability. Guided by this idea, itaconic and succinic acids and propylene glycol were used in the synthesis of a biobased unsaturated polyester, diluted with biobased reactive diluent, dimethyl itaconate, to cure fully biobased unsaturated polyester resin (UPR). Despite having a low environmental impact, the mechanical properties of biobased UPRs are not considered commercially viable compared to their petroleum-based counterparts. To lessen the discrepancy between the two, nanocellulose (NC) was incorporated into the biobased UPR in two ways. Firstly, NC was added during synthesis, while secondly it was added after the synthesis of UPR was completed. Both series implied the use of three different quantities of NC (1, 2, 3 wt.%). FTIR spectroscopy, gel content analysis, SEM, dynamic mechanical analysis, and uniaxial tensile test were used to characterize obtained biocomposites. It was demonstrated that when NC was added during the synthesis, it had no effect on UPR viscosity. On the other hand, adding NC after the synthesis significantly increased viscosity. Overall results showed that higher quantities of NC increased tensile strength, storage modulus at lower frequencies, and decreased glass transition temperature.",
publisher = "Nice, France : Université Côte d’Azur, University of the French Riviera",
journal = "Book of Abstracts - 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France",
title = "Advancing Biocomposites: Introduction of Nanocellulose as a Sustainable Filler of Biobased Unsaturated Polyester Resins",
pages = "52-52",
url = "https://hdl.handle.net/21.15107/rcub_cer_6958"
}

Pantić, O., Panić, V., Marković, M., Spasojević Savković, M., Savić, S.,& Kalagasidis Krušić, M.. (2023). Advancing Biocomposites: Introduction of Nanocellulose as a Sustainable Filler of Biobased Unsaturated Polyester Resins. in Book of Abstracts - 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France
Nice, France : Université Côte d’Azur, University of the French Riviera., 52-52.
https://hdl.handle.net/21.15107/rcub_cer_6958

Pantić O, Panić V, Marković M, Spasojević Savković M, Savić S, Kalagasidis Krušić M. Advancing Biocomposites: Introduction of Nanocellulose as a Sustainable Filler of Biobased Unsaturated Polyester Resins. in Book of Abstracts - 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France. 2023;:52-52.
https://hdl.handle.net/21.15107/rcub_cer_6958 .

Pantić, Olga, Panić, Vesna, Marković, Maja, Spasojević Savković, Milica, Savić, Sanja, Kalagasidis Krušić, Melina, "Advancing Biocomposites: Introduction of Nanocellulose as a Sustainable Filler of Biobased Unsaturated Polyester Resins" in Book of Abstracts - 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France (2023):52-52,
https://hdl.handle.net/21.15107/rcub_cer_6958 .

TY  - CONF
AU  - Milošević, Ksenija
AU  - Lončarević, Davor
AU  - Kalagasidis Krušić, Melina
AU  - Mudrinić, Tihana
AU  - Dostanić, Jasmina
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7020
AB  - Photocatalytic processes have been recognized as promising and sustainable methods for pollutant degradation and energy conversion. Due to the simplicity of the process, capacity for using renewable and pollution-free solar energy, mild reaction conditions, reasonable reaction time, complete pollutant degradation, no harmful byproducts, and cost-effectiveness, photocatalytic degradation processes are more promising than conventional physical methods. Due to its favorable properties, TiO2 semiconductor has been used as an ideal candidate for photocatalytic reactions. However, large band gap, fast e-/h+ recombination, and low light harvesting efficiency are the main obstacles that restrict its practical application. Using  g-C3N4 semiconductor in combination with TiO2  is an excellent strategy to enhance the photocatalytic activity under visible light irradiation. In this study, g-C3N4/TiO2photocatalyst was successfully synthesized and used in single and simultaneous photodegradation of cationic Methylene Blue and anionic Orange G dyes. To examine the heterojunction between g-C3N4 and TiO2 and the mechanism of the transport pathway of photogenerated e-/h+, the photoluminescence spectra and radical scavenger study were applied. The present research offers a novel approach in reaction mechanism analysis for degradation of dye pollutants in single/mixed solutions and suggests a strategy for determination of heterojunction type in g-C3N4/TiO2 systems.
PB  - Serbian Ceramic Society
C3  - Program and the Book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application XI, 18-20 September 2023, Belgrade, Serbia
T1  - Kinetics and mechanism study of photocatalytic degradation using heterojunction semiconductors
SP  - 53
EP  - 54
UR  - https://hdl.handle.net/21.15107/rcub_cer_7020
ER  - 

@conference{
author = "Milošević, Ksenija and Lončarević, Davor and Kalagasidis Krušić, Melina and Mudrinić, Tihana and Dostanić, Jasmina",
year = "2023",
abstract = "Photocatalytic processes have been recognized as promising and sustainable methods for pollutant degradation and energy conversion. Due to the simplicity of the process, capacity for using renewable and pollution-free solar energy, mild reaction conditions, reasonable reaction time, complete pollutant degradation, no harmful byproducts, and cost-effectiveness, photocatalytic degradation processes are more promising than conventional physical methods. Due to its favorable properties, TiO2 semiconductor has been used as an ideal candidate for photocatalytic reactions. However, large band gap, fast e-/h+ recombination, and low light harvesting efficiency are the main obstacles that restrict its practical application. Using  g-C3N4 semiconductor in combination with TiO2  is an excellent strategy to enhance the photocatalytic activity under visible light irradiation. In this study, g-C3N4/TiO2photocatalyst was successfully synthesized and used in single and simultaneous photodegradation of cationic Methylene Blue and anionic Orange G dyes. To examine the heterojunction between g-C3N4 and TiO2 and the mechanism of the transport pathway of photogenerated e-/h+, the photoluminescence spectra and radical scavenger study were applied. The present research offers a novel approach in reaction mechanism analysis for degradation of dye pollutants in single/mixed solutions and suggests a strategy for determination of heterojunction type in g-C3N4/TiO2 systems.",
publisher = "Serbian Ceramic Society",
journal = "Program and the Book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application XI, 18-20 September 2023, Belgrade, Serbia",
title = "Kinetics and mechanism study of photocatalytic degradation using heterojunction semiconductors",
pages = "53-54",
url = "https://hdl.handle.net/21.15107/rcub_cer_7020"
}

Milošević, K., Lončarević, D., Kalagasidis Krušić, M., Mudrinić, T.,& Dostanić, J.. (2023). Kinetics and mechanism study of photocatalytic degradation using heterojunction semiconductors. in Program and the Book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application XI, 18-20 September 2023, Belgrade, Serbia
Serbian Ceramic Society., 53-54.
https://hdl.handle.net/21.15107/rcub_cer_7020

Milošević K, Lončarević D, Kalagasidis Krušić M, Mudrinić T, Dostanić J. Kinetics and mechanism study of photocatalytic degradation using heterojunction semiconductors. in Program and the Book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application XI, 18-20 September 2023, Belgrade, Serbia. 2023;:53-54.
https://hdl.handle.net/21.15107/rcub_cer_7020 .

Milošević, Ksenija, Lončarević, Davor, Kalagasidis Krušić, Melina, Mudrinić, Tihana, Dostanić, Jasmina, "Kinetics and mechanism study of photocatalytic degradation using heterojunction semiconductors" in Program and the Book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application XI, 18-20 September 2023, Belgrade, Serbia (2023):53-54,
https://hdl.handle.net/21.15107/rcub_cer_7020 .

TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Marković, Maja
AU  - Spasojević, Pavle
AU  - Savić, Sanja
AU  - Kalagasidis Krušić, Melina
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6974
AB  - Development of biobased thermoset polymers encourages the strategic use of biobased 
resources and migrating to greener technologies. Unsaturated polyester resins have an 
extensive array of properties which makes them the most used thermoset resins in the 
production of polymer composite materials. Waste materials, such as eggshells left over 
from the usage of chicken eggs, are abundant and non-hazardous materials which offer 
many benefits in potential use as a filler in developing a biobased composite material. 
Itaconic acid, succinic acid, and neopentyl glycol were employed in unsaturated polyester 
synthesis, while dimethyl itaconate was used as a reactive diluent. Characterization of the 
resulting composite materials included assessing mechanical properties (uniaxial tensile 
test, three-point bending test), FTIR spectroscopy, and gel content analysis.
AB  - Novi trendovi u polimernoj industriji podstiču upotrebu sirovina dobijenih iz bioobnovljivih izvora kao i prelazak na zelenu tehnologiju. Nezasićene poliestarske smole su najzastupljenije termoreaktivne smole u proizvodnji polimernih kompozitnih materijala. Otpadni materijali, kao što su ljuske preostale od upotrebe kokošijih jaja, nastaju u velikim količinama, pri čemu ne predstavljaju opasan otpad zbog čega su korišćena kao punila za proizvodnju polimernih kompozitnih materijala. Za sintezu matrice korišćene su itakonska kiselina, ćilibarna kiselina, neopentil glikol, pri čemu je kao reaktivni rastvarač korišćen dimetil itakonat. Karakterizacija dobijenih kompozitnih materijala se sastojala od mehaničkog ispitivanja jednoosnim istezanjem kao i savijanjem u tri tačke, dok su 
promene u hemijskoj strukturi ispitivane FTIR spektroskopijom, a stepen umreženja je određivan analizom sadržaja gel faze.
PB  - Belgrade : Serbian Chemical Society
C3  - Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
T1  - Composite materials Prepared From Waste Eggshells And Biobased Unsaturated Polyester Resin
T1  - Kompozitni materijali na bazi otpadne ljuske jajeta i nezasićenih  poliestarskih smola dobijenih iz bioobnovljivih izvora
SP  - 148
EP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_cer_6974
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Marković, Maja and Spasojević, Pavle and Savić, Sanja and Kalagasidis Krušić, Melina",
year = "2023",
abstract = "Development of biobased thermoset polymers encourages the strategic use of biobased 
resources and migrating to greener technologies. Unsaturated polyester resins have an 
extensive array of properties which makes them the most used thermoset resins in the 
production of polymer composite materials. Waste materials, such as eggshells left over 
from the usage of chicken eggs, are abundant and non-hazardous materials which offer 
many benefits in potential use as a filler in developing a biobased composite material. 
Itaconic acid, succinic acid, and neopentyl glycol were employed in unsaturated polyester 
synthesis, while dimethyl itaconate was used as a reactive diluent. Characterization of the 
resulting composite materials included assessing mechanical properties (uniaxial tensile 
test, three-point bending test), FTIR spectroscopy, and gel content analysis., Novi trendovi u polimernoj industriji podstiču upotrebu sirovina dobijenih iz bioobnovljivih izvora kao i prelazak na zelenu tehnologiju. Nezasićene poliestarske smole su najzastupljenije termoreaktivne smole u proizvodnji polimernih kompozitnih materijala. Otpadni materijali, kao što su ljuske preostale od upotrebe kokošijih jaja, nastaju u velikim količinama, pri čemu ne predstavljaju opasan otpad zbog čega su korišćena kao punila za proizvodnju polimernih kompozitnih materijala. Za sintezu matrice korišćene su itakonska kiselina, ćilibarna kiselina, neopentil glikol, pri čemu je kao reaktivni rastvarač korišćen dimetil itakonat. Karakterizacija dobijenih kompozitnih materijala se sastojala od mehaničkog ispitivanja jednoosnim istezanjem kao i savijanjem u tri tačke, dok su 
promene u hemijskoj strukturi ispitivane FTIR spektroskopijom, a stepen umreženja je određivan analizom sadržaja gel faze.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia",
title = "Composite materials Prepared From Waste Eggshells And Biobased Unsaturated Polyester Resin, Kompozitni materijali na bazi otpadne ljuske jajeta i nezasićenih  poliestarskih smola dobijenih iz bioobnovljivih izvora",
pages = "148-148",
url = "https://hdl.handle.net/21.15107/rcub_cer_6974"
}

Pantić, O., Panić, V., Marković, M., Spasojević, P., Savić, S.,& Kalagasidis Krušić, M.. (2023). Composite materials Prepared From Waste Eggshells And Biobased Unsaturated Polyester Resin. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
Belgrade : Serbian Chemical Society., 148-148.
https://hdl.handle.net/21.15107/rcub_cer_6974

Pantić O, Panić V, Marković M, Spasojević P, Savić S, Kalagasidis Krušić M. Composite materials Prepared From Waste Eggshells And Biobased Unsaturated Polyester Resin. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia. 2023;:148-148.
https://hdl.handle.net/21.15107/rcub_cer_6974 .

Pantić, Olga, Panić, Vesna, Marković, Maja, Spasojević, Pavle, Savić, Sanja, Kalagasidis Krušić, Melina, "Composite materials Prepared From Waste Eggshells And Biobased Unsaturated Polyester Resin" in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia (2023):148-148,
https://hdl.handle.net/21.15107/rcub_cer_6974 .

TY  - JOUR
AU  - Milošević, Ksenija
AU  - Lončarević, Davor
AU  - Mudrinić, Tihana
AU  - Kalagasidis Krušić, Melina
AU  - Dostanić, Jasmina
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5794
AB  - The visible-light-active heterojunctions based on TiO2 were extensively investigated due to their wide range of energy and environment applications. In this study, g-C3N4/titanate heterojunction photocatalyst was successfully prepared by a simple one-step calcination route from melamine and hydrothermally prepared titanates. The photocatalyst was characterized by different physicochemical methods, e.g., X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 physisorption analysis. The photocatalytic efficiency of synthesized photocatalyst was evaluated by single and simultaneous degradation of methylene blue (MB) and orange G (OG) dyes under solar and visible light irradiation. The photocatalyst exhibited improved visible light activity due to the efficient separation of photogenerated charge carriers and enhanced visible light absorption. The degradation of MB was examined under different reaction conditions to assess the influence of initial MB concentration, catalyst loading, and pH on the degradation kinetics. Dye degradation study in the single and binary dye systems revealed that adsorption was limiting step that governs the pollutant degradation order. Radical trapping experiments were performed using different types of scavengers to highlight the difference in photochemical reactions and mechanism of MB and OG dye degradation under different light irradiation. Comparison of the reaction pathways under visible and solar light irradiation supported with determined bandgap edges and photoluminescence (PL) analysis suggested that the g-C3N4/titanate heterojunction belonged to the type II heterojunction. Graphical Abstract: [Figure not available: see fulltext.].
PB  - Springer Science and Business Media B.V.
T2  - Journal of Nanoparticle Research
T1  - Mechanistic insights into the simultaneous visible-light induced photodegradation of organic pollutants by g-C3N4/titanate heterojunction
VL  - 25
IS  - 2
SP  - 26
DO  - 10.1007/s11051-023-05673-x
ER  - 

@article{
author = "Milošević, Ksenija and Lončarević, Davor and Mudrinić, Tihana and Kalagasidis Krušić, Melina and Dostanić, Jasmina",
year = "2023",
abstract = "The visible-light-active heterojunctions based on TiO2 were extensively investigated due to their wide range of energy and environment applications. In this study, g-C3N4/titanate heterojunction photocatalyst was successfully prepared by a simple one-step calcination route from melamine and hydrothermally prepared titanates. The photocatalyst was characterized by different physicochemical methods, e.g., X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 physisorption analysis. The photocatalytic efficiency of synthesized photocatalyst was evaluated by single and simultaneous degradation of methylene blue (MB) and orange G (OG) dyes under solar and visible light irradiation. The photocatalyst exhibited improved visible light activity due to the efficient separation of photogenerated charge carriers and enhanced visible light absorption. The degradation of MB was examined under different reaction conditions to assess the influence of initial MB concentration, catalyst loading, and pH on the degradation kinetics. Dye degradation study in the single and binary dye systems revealed that adsorption was limiting step that governs the pollutant degradation order. Radical trapping experiments were performed using different types of scavengers to highlight the difference in photochemical reactions and mechanism of MB and OG dye degradation under different light irradiation. Comparison of the reaction pathways under visible and solar light irradiation supported with determined bandgap edges and photoluminescence (PL) analysis suggested that the g-C3N4/titanate heterojunction belonged to the type II heterojunction. Graphical Abstract: [Figure not available: see fulltext.].",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Nanoparticle Research",
title = "Mechanistic insights into the simultaneous visible-light induced photodegradation of organic pollutants by g-C3N4/titanate heterojunction",
volume = "25",
number = "2",
pages = "26",
doi = "10.1007/s11051-023-05673-x"
}

Milošević, K., Lončarević, D., Mudrinić, T., Kalagasidis Krušić, M.,& Dostanić, J.. (2023). Mechanistic insights into the simultaneous visible-light induced photodegradation of organic pollutants by g-C3N4/titanate heterojunction. in Journal of Nanoparticle Research
Springer Science and Business Media B.V.., 25(2), 26.
https://doi.org/10.1007/s11051-023-05673-x

Milošević K, Lončarević D, Mudrinić T, Kalagasidis Krušić M, Dostanić J. Mechanistic insights into the simultaneous visible-light induced photodegradation of organic pollutants by g-C3N4/titanate heterojunction. in Journal of Nanoparticle Research. 2023;25(2):26.
doi:10.1007/s11051-023-05673-x .

Milošević, Ksenija, Lončarević, Davor, Mudrinić, Tihana, Kalagasidis Krušić, Melina, Dostanić, Jasmina, "Mechanistic insights into the simultaneous visible-light induced photodegradation of organic pollutants by g-C3N4/titanate heterojunction" in Journal of Nanoparticle Research, 25, no. 2 (2023):26,
https://doi.org/10.1007/s11051-023-05673-x . .

TY  - CONF
AU  - Pantić, Olga
AU  - Spasojević, Pavle
AU  - Panić, Vesna
AU  - Marković, Maja D.
AU  - Savić, Sanja I.
AU  - Kalagasidis Krušić, Melina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5241
AB  - Pectin and pectin derived oligosaccharides can be obtained from waste apple pomace(biomass). Traditional method for pectin extraction involves use of diluted mineral acids atelevated temperatures, with yields of about 10 to 15%. As an alternative to conventionalmethods, the use of eutectic solvents is increasing because of their superior propertieswhen it comes to targeted extraction of certain components from biomass. The aim of thispaper is ultrasound assisted extraction of pectin from waste apple pomace using cholinechloride based eutectic solvents and lactic acid. Properties of extracted products wereexamined using FTIR spectroscopy and differential scanning calorimetry.
AB  - Pektin i pektinski oligosaharidi mogu se dobiti iz otpadne jabučne kaše. Ovaj prirodni  polimer ima široku primenu u industriji. Tradicionalna metoda za ekstrakciju pektina  podrazumeva tretman razblaženim mineralnim kiselinama na povišenoj temperaturi, pri  čemu se prinosi ostvaruju od oko 10 do 15%. Kao alternativa tradicionalnim rastvaračima  sve češće se koriste i eutektički rastvarači, koje odlikuju daleko superiornija svojstva kada  je reč o ciljanoj ekstrakciji određenih komponenti iz biomase. Cilj ovog rada je ultrazvučna  ekstrakcija pektina primenom eutektičkih rastvarača na bazi holin hlorida i mlečne  kiseline. Svojstva ekstrahovanog proizvoda ispitana su primenom FTIR spektroskopije i  diferencijalne skenirajuće kalorimetrije.
PB  - Serbian Chemical Society
C3  - Book of Abstracts, Proceedings - 58th Meeting of the Serbian Chemical Society, Belgrade, Serbia, June 9-10, 2022 / Kratki izvodi radova, kjniga radova - 58. Savetovanje Srpskog hemijskog društva, Beograd 9. - 10. jun 2022.
T1  - Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents
T1  - Ultrazvučna ekstrakcija pektina iz otpadne jabučne kaše  primenom eutektičkih rastvarača na bazi holin hlorida
SP  - 170
EP  - 170
UR  - https://hdl.handle.net/21.15107/rcub_cer_5241
ER  - 

@conference{
author = "Pantić, Olga and Spasojević, Pavle and Panić, Vesna and Marković, Maja D. and Savić, Sanja I. and Kalagasidis Krušić, Melina",
year = "2022",
abstract = "Pectin and pectin derived oligosaccharides can be obtained from waste apple pomace(biomass). Traditional method for pectin extraction involves use of diluted mineral acids atelevated temperatures, with yields of about 10 to 15%. As an alternative to conventionalmethods, the use of eutectic solvents is increasing because of their superior propertieswhen it comes to targeted extraction of certain components from biomass. The aim of thispaper is ultrasound assisted extraction of pectin from waste apple pomace using cholinechloride based eutectic solvents and lactic acid. Properties of extracted products wereexamined using FTIR spectroscopy and differential scanning calorimetry., Pektin i pektinski oligosaharidi mogu se dobiti iz otpadne jabučne kaše. Ovaj prirodni  polimer ima široku primenu u industriji. Tradicionalna metoda za ekstrakciju pektina  podrazumeva tretman razblaženim mineralnim kiselinama na povišenoj temperaturi, pri  čemu se prinosi ostvaruju od oko 10 do 15%. Kao alternativa tradicionalnim rastvaračima  sve češće se koriste i eutektički rastvarači, koje odlikuju daleko superiornija svojstva kada  je reč o ciljanoj ekstrakciji određenih komponenti iz biomase. Cilj ovog rada je ultrazvučna  ekstrakcija pektina primenom eutektičkih rastvarača na bazi holin hlorida i mlečne  kiseline. Svojstva ekstrahovanog proizvoda ispitana su primenom FTIR spektroskopije i  diferencijalne skenirajuće kalorimetrije.",
publisher = "Serbian Chemical Society",
journal = "Book of Abstracts, Proceedings - 58th Meeting of the Serbian Chemical Society, Belgrade, Serbia, June 9-10, 2022 / Kratki izvodi radova, kjniga radova - 58. Savetovanje Srpskog hemijskog društva, Beograd 9. - 10. jun 2022.",
title = "Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents, Ultrazvučna ekstrakcija pektina iz otpadne jabučne kaše  primenom eutektičkih rastvarača na bazi holin hlorida",
pages = "170-170",
url = "https://hdl.handle.net/21.15107/rcub_cer_5241"
}

Pantić, O., Spasojević, P., Panić, V., Marković, M. D., Savić, S. I.,& Kalagasidis Krušić, M.. (2022). Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in Book of Abstracts, Proceedings - 58th Meeting of the Serbian Chemical Society, Belgrade, Serbia, June 9-10, 2022 / Kratki izvodi radova, kjniga radova - 58. Savetovanje Srpskog hemijskog društva, Beograd 9. - 10. jun 2022.
Serbian Chemical Society., 170-170.
https://hdl.handle.net/21.15107/rcub_cer_5241

Pantić O, Spasojević P, Panić V, Marković MD, Savić SI, Kalagasidis Krušić M. Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in Book of Abstracts, Proceedings - 58th Meeting of the Serbian Chemical Society, Belgrade, Serbia, June 9-10, 2022 / Kratki izvodi radova, kjniga radova - 58. Savetovanje Srpskog hemijskog društva, Beograd 9. - 10. jun 2022.. 2022;:170-170.
https://hdl.handle.net/21.15107/rcub_cer_5241 .

Pantić, Olga, Spasojević, Pavle, Panić, Vesna, Marković, Maja D., Savić, Sanja I., Kalagasidis Krušić, Melina, "Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents" in Book of Abstracts, Proceedings - 58th Meeting of the Serbian Chemical Society, Belgrade, Serbia, June 9-10, 2022 / Kratki izvodi radova, kjniga radova - 58. Savetovanje Srpskog hemijskog društva, Beograd 9. - 10. jun 2022. (2022):170-170,
https://hdl.handle.net/21.15107/rcub_cer_5241 .

TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Savić, Sanja
AU  - Marković, Maja
AU  - Kalagasidis Krušić, Melina
AU  - Spasojević, Pavle
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6952
AB  - Replacing styrene with biobased monomers to produce fully biobased unsaturated polyester
resins (UPRs) turned out to be quite a challenging task. Styrene has been recognized as a hazardous and a potentially carcinogenic substance for human health. Using dimethyl itaconate as an alternative reactive diluent to styrene, which can be obtained from renewable resources, enables low viscosity for easy manipulation of mentioned UPRs. Fully biobased UPRs in question were based on itaconic acid, succinic acid, and propylene glycol, which were then diluted with dimethyl itaconate. Having in mind that UPRs can be used as a matrix for composite materials, this paper examines the effect of different weight ratios of spent coffee grounds as a filler. To determine the application of thus obtained composite materials, characterization consisted of examining mechanical properties based on viscosity measurements, uniaxial stretching experiments, FTIR spectroscopy and gel content analysis.
AB  - Upotreba bioobnovljivih monomera umesto stirena u proizvodnji nezasićenih poliestarskih (NZPE) smola, koje se u potpunosti dobijaju iz bioobnovljivih izvora predstavlja veliki izazov. Savremena istraživanja su ukazala da je stiren vrlo toksičan po ljudsko zdravlje i kategorizovan je kao potencijalno kancerogena supstanca. Upotrebom dimetil itakonata kao alternativnog rastvarača, koji se može dobiti iz obnovljivih izvora, obezbeđuje se niska viskoznost koja je neophodna  za industrijsku primenu NZPE smola. U ovom radu je sintetisana NZPE smola na bazi ćilibarne kiseline, itakonske kiseline i propilen glikola, koja je zatim razblažena dimetil itakonatom. S obzirom da NZPE smole imaju značajnu primenu u izradi kompozitnih materijala, u ovom radu su dalje ispitivana svojstva materijala pri različitim udelima otpadne kafe kao punioca (10, 20, 30 mas.%). Nakon sinteze određena je viskozimetrija, mehaničke karakteristike kompozitinih materijala, kao i sadržaj gel faze. Strukturna  svojstva ispitana su  primenom  FTIR spektrokopije .
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
PB  - Društvo za procesnu tehniku
C3  - Zbornik radova - 35. Međunarodni kongres o procesnoj industriji, PROCESING ‘22, 1-3. jun 2022, Beograd
T1  - Biobased composite materials obtained from unsaturated polyester resins and waste coffee
T1  - Kompozitni materijali na bazi nezasićenih poliestarskih smola dobijenih iz bioobnovljivih izvora i otpadne kafe
SP  - 41
EP  - 48
DO  - 10.24094/ptk.022.041
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Savić, Sanja and Marković, Maja and Kalagasidis Krušić, Melina and Spasojević, Pavle",
year = "2022",
abstract = "Replacing styrene with biobased monomers to produce fully biobased unsaturated polyester
resins (UPRs) turned out to be quite a challenging task. Styrene has been recognized as a hazardous and a potentially carcinogenic substance for human health. Using dimethyl itaconate as an alternative reactive diluent to styrene, which can be obtained from renewable resources, enables low viscosity for easy manipulation of mentioned UPRs. Fully biobased UPRs in question were based on itaconic acid, succinic acid, and propylene glycol, which were then diluted with dimethyl itaconate. Having in mind that UPRs can be used as a matrix for composite materials, this paper examines the effect of different weight ratios of spent coffee grounds as a filler. To determine the application of thus obtained composite materials, characterization consisted of examining mechanical properties based on viscosity measurements, uniaxial stretching experiments, FTIR spectroscopy and gel content analysis., Upotreba bioobnovljivih monomera umesto stirena u proizvodnji nezasićenih poliestarskih (NZPE) smola, koje se u potpunosti dobijaju iz bioobnovljivih izvora predstavlja veliki izazov. Savremena istraživanja su ukazala da je stiren vrlo toksičan po ljudsko zdravlje i kategorizovan je kao potencijalno kancerogena supstanca. Upotrebom dimetil itakonata kao alternativnog rastvarača, koji se može dobiti iz obnovljivih izvora, obezbeđuje se niska viskoznost koja je neophodna  za industrijsku primenu NZPE smola. U ovom radu je sintetisana NZPE smola na bazi ćilibarne kiseline, itakonske kiseline i propilen glikola, koja je zatim razblažena dimetil itakonatom. S obzirom da NZPE smole imaju značajnu primenu u izradi kompozitnih materijala, u ovom radu su dalje ispitivana svojstva materijala pri različitim udelima otpadne kafe kao punioca (10, 20, 30 mas.%). Nakon sinteze određena je viskozimetrija, mehaničke karakteristike kompozitinih materijala, kao i sadržaj gel faze. Strukturna  svojstva ispitana su  primenom  FTIR spektrokopije .",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Društvo za procesnu tehniku",
journal = "Zbornik radova - 35. Međunarodni kongres o procesnoj industriji, PROCESING ‘22, 1-3. jun 2022, Beograd",
title = "Biobased composite materials obtained from unsaturated polyester resins and waste coffee, Kompozitni materijali na bazi nezasićenih poliestarskih smola dobijenih iz bioobnovljivih izvora i otpadne kafe",
pages = "41-48",
doi = "10.24094/ptk.022.041"
}

Pantić, O., Panić, V., Savić, S., Marković, M., Kalagasidis Krušić, M.,& Spasojević, P.. (2022). Biobased composite materials obtained from unsaturated polyester resins and waste coffee. in Zbornik radova - 35. Međunarodni kongres o procesnoj industriji, PROCESING ‘22, 1-3. jun 2022, Beograd
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 41-48.
https://doi.org/10.24094/ptk.022.041

Pantić O, Panić V, Savić S, Marković M, Kalagasidis Krušić M, Spasojević P. Biobased composite materials obtained from unsaturated polyester resins and waste coffee. in Zbornik radova - 35. Međunarodni kongres o procesnoj industriji, PROCESING ‘22, 1-3. jun 2022, Beograd. 2022;:41-48.
doi:10.24094/ptk.022.041 .

Pantić, Olga, Panić, Vesna, Savić, Sanja, Marković, Maja, Kalagasidis Krušić, Melina, Spasojević, Pavle, "Biobased composite materials obtained from unsaturated polyester resins and waste coffee" in Zbornik radova - 35. Međunarodni kongres o procesnoj industriji, PROCESING ‘22, 1-3. jun 2022, Beograd (2022):41-48,
https://doi.org/10.24094/ptk.022.041 . .

TY  - CONF
AU  - Pantić, Olga
AU  - Savić, Sanja
AU  - Panić, Vesna
AU  - Marković, Maja
AU  - Kalagasidis Krušić, Melina
AU  - Spasojević, Pavle
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6953
AB  - Most used raw materials for production of unsaturated polyester resins are obtained from 
petroleum. Transitioning to biobased unsaturated polyester resins is a complex, costly and time consuming process, but it is necessary to lower the dependence of petroleum. Unsaturated polyester 
resins are the most used type of resin as a matrix for composite materials. Natural fillers in these 
materials can provide several benefits as they are abundant, recyclable, and non-toxic. Synthesized 
unsaturated polyester consisted of itaconic acid, succinic acid, propylene glycol and neopentyl 
glycol, while dimethyl itaconate was used as a reactive diluent. In this paper we examined two 
different natural fillers, rosehip flour and hemp fibres, both of which were varied in weight ratios. 
Characterization of obtained composite materials consisted of examining mechanical properties by 
uniaxial tensile test, FTIR spectroscopy and gel content analysis.
PB  - Banja Luka : University in Banjaluka, Faculty of Technology
C3  - Book of proceedings - XIV Conference of  Chemists, Technologists and Environmentalists of Republic of Srpska,  Banja Luka, October 21-22, 2022
T1  - Biobased unsaturated polyester resins reinforced with natural fillers
SP  - 42
EP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_cer_6953
ER  - 

@conference{
author = "Pantić, Olga and Savić, Sanja and Panić, Vesna and Marković, Maja and Kalagasidis Krušić, Melina and Spasojević, Pavle",
year = "2022",
abstract = "Most used raw materials for production of unsaturated polyester resins are obtained from 
petroleum. Transitioning to biobased unsaturated polyester resins is a complex, costly and time consuming process, but it is necessary to lower the dependence of petroleum. Unsaturated polyester 
resins are the most used type of resin as a matrix for composite materials. Natural fillers in these 
materials can provide several benefits as they are abundant, recyclable, and non-toxic. Synthesized 
unsaturated polyester consisted of itaconic acid, succinic acid, propylene glycol and neopentyl 
glycol, while dimethyl itaconate was used as a reactive diluent. In this paper we examined two 
different natural fillers, rosehip flour and hemp fibres, both of which were varied in weight ratios. 
Characterization of obtained composite materials consisted of examining mechanical properties by 
uniaxial tensile test, FTIR spectroscopy and gel content analysis.",
publisher = "Banja Luka : University in Banjaluka, Faculty of Technology",
journal = "Book of proceedings - XIV Conference of  Chemists, Technologists and Environmentalists of Republic of Srpska,  Banja Luka, October 21-22, 2022",
title = "Biobased unsaturated polyester resins reinforced with natural fillers",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_cer_6953"
}

Pantić, O., Savić, S., Panić, V., Marković, M., Kalagasidis Krušić, M.,& Spasojević, P.. (2022). Biobased unsaturated polyester resins reinforced with natural fillers. in Book of proceedings - XIV Conference of  Chemists, Technologists and Environmentalists of Republic of Srpska,  Banja Luka, October 21-22, 2022
Banja Luka : University in Banjaluka, Faculty of Technology., 42-42.
https://hdl.handle.net/21.15107/rcub_cer_6953

Pantić O, Savić S, Panić V, Marković M, Kalagasidis Krušić M, Spasojević P. Biobased unsaturated polyester resins reinforced with natural fillers. in Book of proceedings - XIV Conference of  Chemists, Technologists and Environmentalists of Republic of Srpska,  Banja Luka, October 21-22, 2022. 2022;:42-42.
https://hdl.handle.net/21.15107/rcub_cer_6953 .

Pantić, Olga, Savić, Sanja, Panić, Vesna, Marković, Maja, Kalagasidis Krušić, Melina, Spasojević, Pavle, "Biobased unsaturated polyester resins reinforced with natural fillers" in Book of proceedings - XIV Conference of  Chemists, Technologists and Environmentalists of Republic of Srpska,  Banja Luka, October 21-22, 2022 (2022):42-42,
https://hdl.handle.net/21.15107/rcub_cer_6953 .

TY  - CONF
AU  - Milošević, Ksenija
AU  - Janjić, Ognjen
AU  - Lučić Škorić, Marija
AU  - Kalagasidis Krušić, Melina
PY  - 2019
UR  - https://www.shd.org.rs/index.php/abstracts-56
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3300
AB  - Textile industry wastewater represents a serious environmental problem because it contains different dyes and toxic substances used during the production and dyeing of textile. Thus, it is necessary to investigate the removal of dyes from wastewater using a simple method such as sorption. Since different salts are used during the dyeing of textile, anions and cations are present in wastewaters and they can affect the process of dye removal. In this paper, the influence of several anions on the removal of textile dyes was investigated. Chitosan and methacrylic acid-based hydrogels obtained by free-radical polymerization and cross-linked with N,N'-methylenebisacrylamide were used as sorbents. Removal of two textile dyes was investigated (anionic dye C.I. Acid Orange 7 and cationic dye C.I. Basic Red 1) at two different temperatures (25 and 50 ° C). The influence of anions on the removal was evaluated using sodium compounds dissolved in dye solutions (NaCl, CH3COONa, Na2CO3, Na2HPO4, NaH2PO4, NaNO3, NaOH). It has been found that hydrogel degree of swelling increased significantly with the increase of pH of the dye solution. The presence of different ions affected the sorption capacity of hydrogels and the best results were obtained when NaH2PO4 and NaNO3 were present.
AB  - Otpadne vode tekstilne industrije predstavljaju ozbiljan ekološki problem, jer u sebi sadrže različite boje i toksične supstance koje se upotrebljavaju tokom proizvodnje i bojenja tekstila. Stoga, potrebno je da se ispita mogućnost uklanjanja boja iz otpadnih voda tekstilne industrije jednostavnom metodom sorpcije. Kako se u procesu bojenja tekstila koriste različite soli, u ovim otpadnim vodama često su prisutni anjoni i katjoni koji mogu da utiču na sam proces uklanjanja boja. U ovom radu analiziran je uticaj nekoliko anjona na uklanjanje boja za tekstil pomoću hidrogelova na bazi hitozana. Korišćeni hidrogelovi su kopolimeri hitozana i metakrilne kiseline dobijeni slobodno-radikalskom polimerizacijom, a kao umreživač je upotrebljen N,N’-metilenbisakrilamid. Anjonska boja C.I. Acid Orange 7 i katjonska boja C.I. Basic Red 1 su korišćene u model vodama, a uklanjanje boja je izvedeno na dve različite temperature (25 i 50 C). Uticaj anjona je ispitan dodatkom natrijumovih jedinjenja u rastvore boja (NaCl, CH3COONa, Na2CO3, Na2HPO4, NaH2PO4, NaNO3, NaOH). Utvrđeno je da hidrogelovi izrazito bubre sa povećanjem pH rastvora. Prisustvo različitih jona utiče na kapacitet sorpcije, a najbolji rezultati su dobijeni kada su u rastvoru prisutne soli NaH2PO4 i NaNO3.
PB  - Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd
C3  - 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova, Niš 7-8.9. 2019.
T1  - The effect of anions on the removal of dyes from textile industry wastewater
T1  - Uticaj anjona na uklanjanje boja iz otpadnih voda tekstilne industrije
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_cer_3300
ER  - 

@conference{
author = "Milošević, Ksenija and Janjić, Ognjen and Lučić Škorić, Marija and Kalagasidis Krušić, Melina",
year = "2019",
abstract = "Textile industry wastewater represents a serious environmental problem because it contains different dyes and toxic substances used during the production and dyeing of textile. Thus, it is necessary to investigate the removal of dyes from wastewater using a simple method such as sorption. Since different salts are used during the dyeing of textile, anions and cations are present in wastewaters and they can affect the process of dye removal. In this paper, the influence of several anions on the removal of textile dyes was investigated. Chitosan and methacrylic acid-based hydrogels obtained by free-radical polymerization and cross-linked with N,N'-methylenebisacrylamide were used as sorbents. Removal of two textile dyes was investigated (anionic dye C.I. Acid Orange 7 and cationic dye C.I. Basic Red 1) at two different temperatures (25 and 50 ° C). The influence of anions on the removal was evaluated using sodium compounds dissolved in dye solutions (NaCl, CH3COONa, Na2CO3, Na2HPO4, NaH2PO4, NaNO3, NaOH). It has been found that hydrogel degree of swelling increased significantly with the increase of pH of the dye solution. The presence of different ions affected the sorption capacity of hydrogels and the best results were obtained when NaH2PO4 and NaNO3 were present., Otpadne vode tekstilne industrije predstavljaju ozbiljan ekološki problem, jer u sebi sadrže različite boje i toksične supstance koje se upotrebljavaju tokom proizvodnje i bojenja tekstila. Stoga, potrebno je da se ispita mogućnost uklanjanja boja iz otpadnih voda tekstilne industrije jednostavnom metodom sorpcije. Kako se u procesu bojenja tekstila koriste različite soli, u ovim otpadnim vodama često su prisutni anjoni i katjoni koji mogu da utiču na sam proces uklanjanja boja. U ovom radu analiziran je uticaj nekoliko anjona na uklanjanje boja za tekstil pomoću hidrogelova na bazi hitozana. Korišćeni hidrogelovi su kopolimeri hitozana i metakrilne kiseline dobijeni slobodno-radikalskom polimerizacijom, a kao umreživač je upotrebljen N,N’-metilenbisakrilamid. Anjonska boja C.I. Acid Orange 7 i katjonska boja C.I. Basic Red 1 su korišćene u model vodama, a uklanjanje boja je izvedeno na dve različite temperature (25 i 50 C). Uticaj anjona je ispitan dodatkom natrijumovih jedinjenja u rastvore boja (NaCl, CH3COONa, Na2CO3, Na2HPO4, NaH2PO4, NaNO3, NaOH). Utvrđeno je da hidrogelovi izrazito bubre sa povećanjem pH rastvora. Prisustvo različitih jona utiče na kapacitet sorpcije, a najbolji rezultati su dobijeni kada su u rastvoru prisutne soli NaH2PO4 i NaNO3.",
publisher = "Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd",
journal = "56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova, Niš 7-8.9. 2019.",
title = "The effect of anions on the removal of dyes from textile industry wastewater, Uticaj anjona na uklanjanje boja iz otpadnih voda tekstilne industrije",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_cer_3300"
}

Milošević, K., Janjić, O., Lučić Škorić, M.,& Kalagasidis Krušić, M.. (2019). The effect of anions on the removal of dyes from textile industry wastewater. in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova, Niš 7-8.9. 2019.
Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd., 76.
https://hdl.handle.net/21.15107/rcub_cer_3300

Milošević K, Janjić O, Lučić Škorić M, Kalagasidis Krušić M. The effect of anions on the removal of dyes from textile industry wastewater. in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova, Niš 7-8.9. 2019.. 2019;:76.
https://hdl.handle.net/21.15107/rcub_cer_3300 .

Milošević, Ksenija, Janjić, Ognjen, Lučić Škorić, Marija, Kalagasidis Krušić, Melina, "The effect of anions on the removal of dyes from textile industry wastewater" in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova, Niš 7-8.9. 2019. (2019):76,
https://hdl.handle.net/21.15107/rcub_cer_3300 .

TY  - CONF
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Lučić Škorić, Marija
AU  - Kalagasidis Krušić, Melina
AU  - Santagata, G.
AU  - Malinconico, M.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2406
AB  - The present paper reports on pectin based films modified with carboxymethyl cellulose intended for food packaging. The films are prepared by solvent-casting method with different carboxymethyl cellulose content and cross-linker concentration (Ca2+ ions) in the presence of glycerol as a plasticizer. FT-IR spectra of the prepared films propose that carboxyl group from pectin are mainly involved in interactions with CMC, whereas −OH groups are mainly involved in self-associated hydrogen bonding of neat polymers. Further, an addition of carboxymethyl cellulose improved mechanical properties compared to pure pectin films, while TGA analysis confirmed satisfying thermal stability regarding their potential application as packaging material. Finally, water vapor permeability values are in the range of 1.32 × 10−7 up to 2.03 × 10−7 g/m h Pa.
PB  - Wiley-VCH Verlag
C3  - Macromolecular Symposia
T1  - Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material
VL  - 378
IS  - 1
SP  - 1600163
DO  - 10.1002/masy.201600163
ER  - 

@conference{
author = "Šešlija, Sanja and Nešić, Aleksandra and Lučić Škorić, Marija and Kalagasidis Krušić, Melina and Santagata, G. and Malinconico, M.",
year = "2018",
abstract = "The present paper reports on pectin based films modified with carboxymethyl cellulose intended for food packaging. The films are prepared by solvent-casting method with different carboxymethyl cellulose content and cross-linker concentration (Ca2+ ions) in the presence of glycerol as a plasticizer. FT-IR spectra of the prepared films propose that carboxyl group from pectin are mainly involved in interactions with CMC, whereas −OH groups are mainly involved in self-associated hydrogen bonding of neat polymers. Further, an addition of carboxymethyl cellulose improved mechanical properties compared to pure pectin films, while TGA analysis confirmed satisfying thermal stability regarding their potential application as packaging material. Finally, water vapor permeability values are in the range of 1.32 × 10−7 up to 2.03 × 10−7 g/m h Pa.",
publisher = "Wiley-VCH Verlag",
journal = "Macromolecular Symposia",
title = "Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material",
volume = "378",
number = "1",
pages = "1600163",
doi = "10.1002/masy.201600163"
}

Šešlija, S., Nešić, A., Lučić Škorić, M., Kalagasidis Krušić, M., Santagata, G.,& Malinconico, M.. (2018). Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material. in Macromolecular Symposia
Wiley-VCH Verlag., 378(1), 1600163.
https://doi.org/10.1002/masy.201600163

Šešlija S, Nešić A, Lučić Škorić M, Kalagasidis Krušić M, Santagata G, Malinconico M. Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material. in Macromolecular Symposia. 2018;378(1):1600163.
doi:10.1002/masy.201600163 .

Šešlija, Sanja, Nešić, Aleksandra, Lučić Škorić, Marija, Kalagasidis Krušić, Melina, Santagata, G., Malinconico, M., "Pectin/Carboxymethylcellulose Films as a Potential Food Packaging Material" in Macromolecular Symposia, 378, no. 1 (2018):1600163,
https://doi.org/10.1002/masy.201600163 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Kalagasidis Krušić, Melina
AU  - Veličković, Sava J.
AU  - Avolio, Roberto
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2473
AB  - The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
VL  - 77
SP  - 494
EP  - 501
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Ružić, Jovana and Kalagasidis Krušić, Melina and Veličković, Sava J. and Avolio, Roberto and Santagata, Gabriella and Malinconico, Mario",
year = "2018",
abstract = "The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
volume = "77",
pages = "494-501",
doi = "10.1016/j.foodhyd.2017.10.027"
}

Šešlija, S., Nešić, A., Ružić, J., Kalagasidis Krušić, M., Veličković, S. J., Avolio, R., Santagata, G.,& Malinconico, M.. (2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Šešlija S, Nešić A, Ružić J, Kalagasidis Krušić M, Veličković SJ, Avolio R, Santagata G, Malinconico M. Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids. 2018;77:494-501.
doi:10.1016/j.foodhyd.2017.10.027 .

Šešlija, Sanja, Nešić, Aleksandra, Ružić, Jovana, Kalagasidis Krušić, Melina, Veličković, Sava J., Avolio, Roberto, Santagata, Gabriella, Malinconico, Mario, "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation" in Food Hydrocolloids, 77 (2018):494-501,
https://doi.org/10.1016/j.foodhyd.2017.10.027 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Kalagasidis Krušić, Melina
AU  - Veličković, Sava
AU  - Avolio, Roberto
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4289
AB  - The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
VL  - 77
SP  - 494
EP  - 501
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Ružić, Jovana and Kalagasidis Krušić, Melina and Veličković, Sava and Avolio, Roberto and Santagata, Gabriella and Malinconico, Mario",
year = "2018",
abstract = "The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
volume = "77",
pages = "494-501",
doi = "10.1016/j.foodhyd.2017.10.027"
}

Šešlija, S., Nešić, A., Ružić, J., Kalagasidis Krušić, M., Veličković, S., Avolio, R., Santagata, G.,& Malinconico, M.. (2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Šešlija S, Nešić A, Ružić J, Kalagasidis Krušić M, Veličković S, Avolio R, Santagata G, Malinconico M. Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids. 2018;77:494-501.
doi:10.1016/j.foodhyd.2017.10.027 .

Šešlija, Sanja, Nešić, Aleksandra, Ružić, Jovana, Kalagasidis Krušić, Melina, Veličković, Sava, Avolio, Roberto, Santagata, Gabriella, Malinconico, Mario, "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation" in Food Hydrocolloids, 77 (2018):494-501,
https://doi.org/10.1016/j.foodhyd.2017.10.027 . .

TY  - JOUR
AU  - Zuza, Milena G.
AU  - Milasinovic, Nikola Z.
AU  - Jonović, Marko
AU  - Jovanovic, Jelena R.
AU  - Kalagasidis Krušić, Melina
AU  - Bugarski, Branko
AU  - Knežević-Jugović, Zorica
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2128
AB  - In this study, alcalase (protease from Bacillus licheniformis) immobilization by adsorption, enzyme crosslinking and covalent enzyme binding to activated chitosan microbeads were examined. The biocatalysts highest activity was obtained by covalent immobilization of alcalase onto a solid support. The alcalase covalent immobilization onto different types of chitosan beads obtained by inverse emulsion technique and electrostatic extrusion was studied. Parameters examined under different conditions were beads diameter, enzyme loading, enzyme capacity yield, and biocatalyst activity. The highest activity and enzyme loading of 23.6 IU/mg protein and 340.2 mg/g, respectively, were achieved by the enzyme immobilized onto chitosan microbeads obtained by the electrostatic extrusion technique. FT-IR analysis was used to confirm formation of alcalase-chitosan conjugates. The activity of optimally produced alcalase-chitosan microbeads was then verified in the industrially feasible reaction systems of egg white and soy protein hydrolysis. The high degree of hydrolysis of 29.85 +/- 0.967% after 180 min and five successive reuses obtained under real conditions (50 A degrees C, pH 8) verified the covalently bound alcalase to chitosan beads a promising candidate for use in industrial egg white protein hydrolysis process.
PB  - Springer, New York
T2  - Bioprocess and Biosystems Engineering
T1  - Design and characterization of alcalase-chitosan conjugates as potential biocatalysts
VL  - 40
IS  - 11
SP  - 1713
EP  - 1723
DO  - 10.1007/s00449-017-1826-7
ER  - 

@article{
author = "Zuza, Milena G. and Milasinovic, Nikola Z. and Jonović, Marko and Jovanovic, Jelena R. and Kalagasidis Krušić, Melina and Bugarski, Branko and Knežević-Jugović, Zorica",
year = "2017",
abstract = "In this study, alcalase (protease from Bacillus licheniformis) immobilization by adsorption, enzyme crosslinking and covalent enzyme binding to activated chitosan microbeads were examined. The biocatalysts highest activity was obtained by covalent immobilization of alcalase onto a solid support. The alcalase covalent immobilization onto different types of chitosan beads obtained by inverse emulsion technique and electrostatic extrusion was studied. Parameters examined under different conditions were beads diameter, enzyme loading, enzyme capacity yield, and biocatalyst activity. The highest activity and enzyme loading of 23.6 IU/mg protein and 340.2 mg/g, respectively, were achieved by the enzyme immobilized onto chitosan microbeads obtained by the electrostatic extrusion technique. FT-IR analysis was used to confirm formation of alcalase-chitosan conjugates. The activity of optimally produced alcalase-chitosan microbeads was then verified in the industrially feasible reaction systems of egg white and soy protein hydrolysis. The high degree of hydrolysis of 29.85 +/- 0.967% after 180 min and five successive reuses obtained under real conditions (50 A degrees C, pH 8) verified the covalently bound alcalase to chitosan beads a promising candidate for use in industrial egg white protein hydrolysis process.",
publisher = "Springer, New York",
journal = "Bioprocess and Biosystems Engineering",
title = "Design and characterization of alcalase-chitosan conjugates as potential biocatalysts",
volume = "40",
number = "11",
pages = "1713-1723",
doi = "10.1007/s00449-017-1826-7"
}

Zuza, M. G., Milasinovic, N. Z., Jonović, M., Jovanovic, J. R., Kalagasidis Krušić, M., Bugarski, B.,& Knežević-Jugović, Z.. (2017). Design and characterization of alcalase-chitosan conjugates as potential biocatalysts. in Bioprocess and Biosystems Engineering
Springer, New York., 40(11), 1713-1723.
https://doi.org/10.1007/s00449-017-1826-7

Zuza MG, Milasinovic NZ, Jonović M, Jovanovic JR, Kalagasidis Krušić M, Bugarski B, Knežević-Jugović Z. Design and characterization of alcalase-chitosan conjugates as potential biocatalysts. in Bioprocess and Biosystems Engineering. 2017;40(11):1713-1723.
doi:10.1007/s00449-017-1826-7 .

Zuza, Milena G., Milasinovic, Nikola Z., Jonović, Marko, Jovanovic, Jelena R., Kalagasidis Krušić, Melina, Bugarski, Branko, Knežević-Jugović, Zorica, "Design and characterization of alcalase-chitosan conjugates as potential biocatalysts" in Bioprocess and Biosystems Engineering, 40, no. 11 (2017):1713-1723,
https://doi.org/10.1007/s00449-017-1826-7 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Veljović, Đorđe
AU  - Kalagasidis Krušić, Melina
AU  - Stevanović, Jasmina
AU  - Veličković, Sava J.
AU  - Popović, Ivanka G.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1968
AB  - The aim of this work was to investigate the influence of specific anions on the cross-linking process of highly methoxylated pectin using the following copper salts CuSO4; Cu(C2H3O2)(2); CuCl2; and Cu(NO3)(2) wherein the initial salt concentrations were varied from 0.5 up to 10 g l(-1). It was found that the anions affected the sorption capacity wherein the Cu2+ sorption capacity from the sulphate solution was the highest, while it decreased in the presence of CH3COO-, Cl- and NO3- ions, respectively. This difference was mostly pronounced at the higher initial salt concentrations (co(Cu2+) > 2 g l(-1)). The obtained beads were characterized by FTIR, MS, SEM/EDS microanalysis and mechanical compression tests up to 80% of deformation. The sorption data were applied to the Langmuir and Freundlich isotherm models and various calculated parameters confirmed the sulphate anion supportive nature in metal ion binding. The value of the K-f parameter for the cross-linking process of pectin in the presence of acetate, chloride and nitrate was approximately the same (K-f approximate to 0.027 g g(-1)), while it was higher in the presence of sulphate anions by more than 20% (K-f = 0.0352 g g(-1)). The predicted 1/n values (1/n  LT  1, 1/n > 1, 1/n = 1 for the sulphate, nitrate and acetate, and chloride anions, respectively) were the quantitative confirmation of the specific interactions involved in the cross-linking mechanism caused by different anions. The established anion influence was in accordance with the typical ion-specific influence on macromolecules in aqueous systems proposed by Hofmeister.
PB  - Royal Soc Chemistry, Cambridge
T2  - New Journal of Chemistry
T1  - Cross-linking of highly methoxylated pectin with copper: the specific anion influence
VL  - 40
IS  - 2
SP  - 1618
EP  - 1625
DO  - 10.1039/c5nj03320a
ER  - 

@article{
author = "Šešlija, Sanja and Veljović, Đorđe and Kalagasidis Krušić, Melina and Stevanović, Jasmina and Veličković, Sava J. and Popović, Ivanka G.",
year = "2016",
abstract = "The aim of this work was to investigate the influence of specific anions on the cross-linking process of highly methoxylated pectin using the following copper salts CuSO4; Cu(C2H3O2)(2); CuCl2; and Cu(NO3)(2) wherein the initial salt concentrations were varied from 0.5 up to 10 g l(-1). It was found that the anions affected the sorption capacity wherein the Cu2+ sorption capacity from the sulphate solution was the highest, while it decreased in the presence of CH3COO-, Cl- and NO3- ions, respectively. This difference was mostly pronounced at the higher initial salt concentrations (co(Cu2+) > 2 g l(-1)). The obtained beads were characterized by FTIR, MS, SEM/EDS microanalysis and mechanical compression tests up to 80% of deformation. The sorption data were applied to the Langmuir and Freundlich isotherm models and various calculated parameters confirmed the sulphate anion supportive nature in metal ion binding. The value of the K-f parameter for the cross-linking process of pectin in the presence of acetate, chloride and nitrate was approximately the same (K-f approximate to 0.027 g g(-1)), while it was higher in the presence of sulphate anions by more than 20% (K-f = 0.0352 g g(-1)). The predicted 1/n values (1/n  LT  1, 1/n > 1, 1/n = 1 for the sulphate, nitrate and acetate, and chloride anions, respectively) were the quantitative confirmation of the specific interactions involved in the cross-linking mechanism caused by different anions. The established anion influence was in accordance with the typical ion-specific influence on macromolecules in aqueous systems proposed by Hofmeister.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "New Journal of Chemistry",
title = "Cross-linking of highly methoxylated pectin with copper: the specific anion influence",
volume = "40",
number = "2",
pages = "1618-1625",
doi = "10.1039/c5nj03320a"
}

Šešlija, S., Veljović, Đ., Kalagasidis Krušić, M., Stevanović, J., Veličković, S. J.,& Popović, I. G.. (2016). Cross-linking of highly methoxylated pectin with copper: the specific anion influence. in New Journal of Chemistry
Royal Soc Chemistry, Cambridge., 40(2), 1618-1625.
https://doi.org/10.1039/c5nj03320a

Šešlija S, Veljović Đ, Kalagasidis Krušić M, Stevanović J, Veličković SJ, Popović IG. Cross-linking of highly methoxylated pectin with copper: the specific anion influence. in New Journal of Chemistry. 2016;40(2):1618-1625.
doi:10.1039/c5nj03320a .

Šešlija, Sanja, Veljović, Đorđe, Kalagasidis Krušić, Melina, Stevanović, Jasmina, Veličković, Sava J., Popović, Ivanka G., "Cross-linking of highly methoxylated pectin with copper: the specific anion influence" in New Journal of Chemistry, 40, no. 2 (2016):1618-1625,
https://doi.org/10.1039/c5nj03320a . .

TY  - JOUR
AU  - Milosavljevic, Nedeljko B.
AU  - Ristic, Mirjana D.
AU  - Peric-Grujic, Aleksandra A.
AU  - Filipovic, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/800
AB  - A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.
PB  - Elsevier
T2  - Colloids and Surfaces A-Physicochemical and Engineering Aspects
T1  - Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study
VL  - 388
IS  - 1-3
SP  - 59
EP  - 69
DO  - 10.1016/j.colsurfa.2011.08.011
ER  - 

@article{
author = "Milosavljevic, Nedeljko B. and Ristic, Mirjana D. and Peric-Grujic, Aleksandra A. and Filipovic, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2011",
abstract = "A removal of Cu2+ ions from aqueous solutions onto hydrogels of chitosan. itaconic and methacrylic acid has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, initial metal ion concentration, contact time and temperature. The FIR spectra showed that -NH2, -OH and -COOH groups are involved in the Cu2+ ions adsorption. The surface topography changes were observed by AFM, where the phase images indicated that sorption takes place on the surface of the hydrogel and in the bulk. Pseudo-first order, pseudo-second order and intraparticle diffusion models were analyzed and showed that the Cu2+ ions adsorption followed pseudo-second order kinetics. The equilibrium data were analyzed using Langmuir, Freundlich and Redlich-Peterson isotherms and the best interpretation was given by Redlich-Peterson. The adsorption capacity was found to be 122.59 mg/g, based on the non-linear Langmuir isotherm. Based on the separation factor. R-L, the Cu2+ ion adsorption is favorable, while the low activation energies indicate physisorption. Desorption experiments, done with a nitric acid, showed that the investigated hydrogels could be reused without significant losses of the initial properties even after three adsorption-sorption cycles.",
publisher = "Elsevier",
journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects",
title = "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study",
volume = "388",
number = "1-3",
pages = "59-69",
doi = "10.1016/j.colsurfa.2011.08.011"
}

Milosavljevic, N. B., Ristic, M. D., Peric-Grujic, A. A., Filipovic, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects
Elsevier., 388(1-3), 59-69.
https://doi.org/10.1016/j.colsurfa.2011.08.011

Milosavljevic NB, Ristic MD, Peric-Grujic AA, Filipovic JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study. in Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2011;388(1-3):59-69.
doi:10.1016/j.colsurfa.2011.08.011 .

Milosavljevic, Nedeljko B., Ristic, Mirjana D., Peric-Grujic, Aleksandra A., Filipovic, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Removal of Cu2+ ions using hydrogels of chitosan, itaconic and methacrylic acid: FTIR, SEM/EDX, AFM, kinetic and equilibrium study" in Colloids and Surfaces A-Physicochemical and Engineering Aspects, 388, no. 1-3 (2011):59-69,
https://doi.org/10.1016/j.colsurfa.2011.08.011 . .

TY  - JOUR
AU  - Milosavljevic, Nedeljko B.
AU  - Ristic, Mirjana D.
AU  - Peric-Grujic, Aleksandra A.
AU  - Filipovic, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/805
AB  - Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature.
PB  - Elsevier
T2  - Journal of Hazardous Materials
T1  - Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid
VL  - 192
IS  - 2
SP  - 846
EP  - 854
DO  - 10.1016/j.jhazmat.2011.05.093
ER  - 

@article{
author = "Milosavljevic, Nedeljko B. and Ristic, Mirjana D. and Peric-Grujic, Aleksandra A. and Filipovic, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2011",
abstract = "Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature.",
publisher = "Elsevier",
journal = "Journal of Hazardous Materials",
title = "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid",
volume = "192",
number = "2",
pages = "846-854",
doi = "10.1016/j.jhazmat.2011.05.093"
}

Milosavljevic, N. B., Ristic, M. D., Peric-Grujic, A. A., Filipovic, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials
Elsevier., 192(2), 846-854.
https://doi.org/10.1016/j.jhazmat.2011.05.093

Milosavljevic NB, Ristic MD, Peric-Grujic AA, Filipovic JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials. 2011;192(2):846-854.
doi:10.1016/j.jhazmat.2011.05.093 .

Milosavljevic, Nedeljko B., Ristic, Mirjana D., Peric-Grujic, Aleksandra A., Filipovic, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid" in Journal of Hazardous Materials, 192, no. 2 (2011):846-854,
https://doi.org/10.1016/j.jhazmat.2011.05.093 . .

TY  - JOUR
AU  - Milosavljevic, Nedeljko B.
AU  - Ristic, Mirjana D.
AU  - Peric-Grujic, Aleksandra A.
AU  - Filipovic, Jovanka M.
AU  - Štrbac, Svetlana
AU  - Rakočević, Zlatko Lj.
AU  - Kalagasidis Krušić, Melina
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/687
AB  - A hydrogel has been synthesized by ionic crosslinking of chitosan (Ch) with itaconic acid (IA), followed by a free radical polymerization and crosslinking of Ch/IA network by adding methacrylic acid and the crosslinker. The resulting material (Ch/IA/MAA hydrogel) was characterized by spectral (Fourier transform infrared (FTIR)), thermal (thermogravimetric analysis (TGA)) and structural (SEM/EDX and atomic force microscopy (AFM)) analyses. The prepared hydrogel was investigated as potential adsorbent for removal of Cd2+ ions from aqueous solution. The effect of various physico-chemical parameters such as pH, adsorbent dosage, adsorbate concentration and contact time was studied in batch experiments. The results of spectral analyses of Cd-loaded hydrogel have shown that active functional groups are -NH2, -OH and -COOH. SEM/EDX analysis and AFM surface topography and phase images indicated that apart from the adsorption on the surface of the hydrogel, sorption takes place in the bulk, as well. The experimental kinetic and equilibrium data were better fitted by pseudo-second order kinetic model and Langmuir adsorption isotherm. The parameters obtained in thermodynamic studies showed that the adsorption of Cd2+ on Ch/IA/MAA hydrogel was spontaneous and exothermic in nature. Desorption studies were carried out using acid leaching (HNO3) and it has been shown that the regenerated hydrogel can be reused three times without any loss of adsorption capacity. The maximum adsorption of 285.7 mg/g has been obtained at pH 5.5 and the results of adsorption/desorption experiments implies that the Ch/IA/MAA hydrogel may be used as efficient sorbent for removal of Cd2+ ions from aqueous solution.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution
VL  - 165
IS  - 2
SP  - 554
EP  - 562
DO  - 10.1016/j.cej.2010.09.072
ER  - 

@article{
author = "Milosavljevic, Nedeljko B. and Ristic, Mirjana D. and Peric-Grujic, Aleksandra A. and Filipovic, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina",
year = "2010",
abstract = "A hydrogel has been synthesized by ionic crosslinking of chitosan (Ch) with itaconic acid (IA), followed by a free radical polymerization and crosslinking of Ch/IA network by adding methacrylic acid and the crosslinker. The resulting material (Ch/IA/MAA hydrogel) was characterized by spectral (Fourier transform infrared (FTIR)), thermal (thermogravimetric analysis (TGA)) and structural (SEM/EDX and atomic force microscopy (AFM)) analyses. The prepared hydrogel was investigated as potential adsorbent for removal of Cd2+ ions from aqueous solution. The effect of various physico-chemical parameters such as pH, adsorbent dosage, adsorbate concentration and contact time was studied in batch experiments. The results of spectral analyses of Cd-loaded hydrogel have shown that active functional groups are -NH2, -OH and -COOH. SEM/EDX analysis and AFM surface topography and phase images indicated that apart from the adsorption on the surface of the hydrogel, sorption takes place in the bulk, as well. The experimental kinetic and equilibrium data were better fitted by pseudo-second order kinetic model and Langmuir adsorption isotherm. The parameters obtained in thermodynamic studies showed that the adsorption of Cd2+ on Ch/IA/MAA hydrogel was spontaneous and exothermic in nature. Desorption studies were carried out using acid leaching (HNO3) and it has been shown that the regenerated hydrogel can be reused three times without any loss of adsorption capacity. The maximum adsorption of 285.7 mg/g has been obtained at pH 5.5 and the results of adsorption/desorption experiments implies that the Ch/IA/MAA hydrogel may be used as efficient sorbent for removal of Cd2+ ions from aqueous solution.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution",
volume = "165",
number = "2",
pages = "554-562",
doi = "10.1016/j.cej.2010.09.072"
}

Milosavljevic, N. B., Ristic, M. D., Peric-Grujic, A. A., Filipovic, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2010). Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 165(2), 554-562.
https://doi.org/10.1016/j.cej.2010.09.072

Milosavljevic NB, Ristic MD, Peric-Grujic AA, Filipovic JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution. in Chemical Engineering Journal. 2010;165(2):554-562.
doi:10.1016/j.cej.2010.09.072 .

Milosavljevic, Nedeljko B., Ristic, Mirjana D., Peric-Grujic, Aleksandra A., Filipovic, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Hydrogel based on chitosan, itaconic acid and methacrylic acid as adsorbent of Cd2+ ions from aqueous solution" in Chemical Engineering Journal, 165, no. 2 (2010):554-562,
https://doi.org/10.1016/j.cej.2010.09.072 . .

TY  - CONF
AU  - Filipović, Jovanka
AU  - Kalagasidis Krušić, Melina
AU  - Petrović-Đakov, Dušanka
AU  - Vuković, Jasna
AU  - Katsikas, Lynne
PY  - 2001
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7328
AB  - Proučavana je matrična polimerizacija metakrilamida u prisustvu poli(itakonske kiseline) radikalnom polimerizacijom u vodi na 40degC, u prisustvu amonijum-persulfata kao inicijatora.
PB  - Belgrade : Serbian Chemical Society
C3  - XIII Jugoslovenski simpozijum o hemiji i tehnologiji makromolekula, Zbornik radova i izvoda, 27-29 jun 2001, Zlatibor
T1  - Matrična polimerizacija metakrilamida u prisustvu poli(itakonske) kiseline
T1  - Template polymerization of methacrylamide in the presence of poly(itaconic) acid
SP  - 129
EP  - 129
UR  - https://hdl.handle.net/21.15107/rcub_cer_7328
ER  - 

@conference{
author = "Filipović, Jovanka and Kalagasidis Krušić, Melina and Petrović-Đakov, Dušanka and Vuković, Jasna and Katsikas, Lynne",
year = "2001",
abstract = "Proučavana je matrična polimerizacija metakrilamida u prisustvu poli(itakonske kiseline) radikalnom polimerizacijom u vodi na 40degC, u prisustvu amonijum-persulfata kao inicijatora.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "XIII Jugoslovenski simpozijum o hemiji i tehnologiji makromolekula, Zbornik radova i izvoda, 27-29 jun 2001, Zlatibor",
title = "Matrična polimerizacija metakrilamida u prisustvu poli(itakonske) kiseline, Template polymerization of methacrylamide in the presence of poly(itaconic) acid",
pages = "129-129",
url = "https://hdl.handle.net/21.15107/rcub_cer_7328"
}

Filipović, J., Kalagasidis Krušić, M., Petrović-Đakov, D., Vuković, J.,& Katsikas, L.. (2001). Matrična polimerizacija metakrilamida u prisustvu poli(itakonske) kiseline. in XIII Jugoslovenski simpozijum o hemiji i tehnologiji makromolekula, Zbornik radova i izvoda, 27-29 jun 2001, Zlatibor
Belgrade : Serbian Chemical Society., 129-129.
https://hdl.handle.net/21.15107/rcub_cer_7328

Filipović J, Kalagasidis Krušić M, Petrović-Đakov D, Vuković J, Katsikas L. Matrična polimerizacija metakrilamida u prisustvu poli(itakonske) kiseline. in XIII Jugoslovenski simpozijum o hemiji i tehnologiji makromolekula, Zbornik radova i izvoda, 27-29 jun 2001, Zlatibor. 2001;:129-129.
https://hdl.handle.net/21.15107/rcub_cer_7328 .

Filipović, Jovanka, Kalagasidis Krušić, Melina, Petrović-Đakov, Dušanka, Vuković, Jasna, Katsikas, Lynne, "Matrična polimerizacija metakrilamida u prisustvu poli(itakonske) kiseline" in XIII Jugoslovenski simpozijum o hemiji i tehnologiji makromolekula, Zbornik radova i izvoda, 27-29 jun 2001, Zlatibor (2001):129-129,
https://hdl.handle.net/21.15107/rcub_cer_7328 .