TY  - CONF
AU  - Bošnjaković, Jovana
AU  - Knežević, Nataša
AU  - Marinković, Aleksandar
AU  - Manasijević, Srećko
AU  - Savić, Andrija
AU  - Milošević, Milena
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6251
AB  - Population growth, the development of agriculture, industry, and mining, caused the creation of an increasing amount of  wastewater. Due to the discharge of wastewater, without prior treatment, the quality of water resources is impaired.  Polluting substances, such as pesticides, have a negative impact on human health and the environment. Heavy pollution  of both surface and underground water is one of the biggest problems associated with the use of pesticides. They reach  human organisms indirectly via agricultural products. Most pesticides are more or less toxic, some of them are highly  soluble in water. In recent years, special attention has been paid to the development of methods for the treatment of  wastewater contaminated with pesticide residues, in order to partially reduce or eliminate their further impact on humans,  plants, and the environment. Among many processes, the photocatalytic degradation process has proven to be a very  effective process for the removal of pesticides from wastewater. Photocatalytic degradation implies the breakdown of  various types of toxic organic substances into simpler molecules, such as ions, water, etc.  In this paper, the photocatalytic degradation of the pesticide mesotrione (MS) using ZnO photocatalyst is presented. The  degradation of the pesticide compound was studied using Shimadzu 1800 analytical UV-VIS spectroscopy. As a  replacement for UVC radiation, a solar-imitated irradiation Ultra Vitalux (UV) lamp (300W) was used. Degradation  kinetics follows pseudo-first order. After 240 minutes, the MS was completely degraded.
PB  - Association of Metallurgical Engineers of Serbia (AMES)
C3  - Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
T1  - Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source
SP  - 383
EP  - 387
UR  - https://hdl.handle.net/21.15107/rcub_cer_6251
ER  - 

@conference{
author = "Bošnjaković, Jovana and Knežević, Nataša and Marinković, Aleksandar and Manasijević, Srećko and Savić, Andrija and Milošević, Milena",
year = "2023",
abstract = "Population growth, the development of agriculture, industry, and mining, caused the creation of an increasing amount of  wastewater. Due to the discharge of wastewater, without prior treatment, the quality of water resources is impaired.  Polluting substances, such as pesticides, have a negative impact on human health and the environment. Heavy pollution  of both surface and underground water is one of the biggest problems associated with the use of pesticides. They reach  human organisms indirectly via agricultural products. Most pesticides are more or less toxic, some of them are highly  soluble in water. In recent years, special attention has been paid to the development of methods for the treatment of  wastewater contaminated with pesticide residues, in order to partially reduce or eliminate their further impact on humans,  plants, and the environment. Among many processes, the photocatalytic degradation process has proven to be a very  effective process for the removal of pesticides from wastewater. Photocatalytic degradation implies the breakdown of  various types of toxic organic substances into simpler molecules, such as ions, water, etc.  In this paper, the photocatalytic degradation of the pesticide mesotrione (MS) using ZnO photocatalyst is presented. The  degradation of the pesticide compound was studied using Shimadzu 1800 analytical UV-VIS spectroscopy. As a  replacement for UVC radiation, a solar-imitated irradiation Ultra Vitalux (UV) lamp (300W) was used. Degradation  kinetics follows pseudo-first order. After 240 minutes, the MS was completely degraded.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES)",
journal = "Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina",
title = "Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source",
pages = "383-387",
url = "https://hdl.handle.net/21.15107/rcub_cer_6251"
}

Bošnjaković, J., Knežević, N., Marinković, A., Manasijević, S., Savić, A.,& Milošević, M.. (2023). Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
Association of Metallurgical Engineers of Serbia (AMES)., 383-387.
https://hdl.handle.net/21.15107/rcub_cer_6251

Bošnjaković J, Knežević N, Marinković A, Manasijević S, Savić A, Milošević M. Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina. 2023;:383-387.
https://hdl.handle.net/21.15107/rcub_cer_6251 .

Bošnjaković, Jovana, Knežević, Nataša, Marinković, Aleksandar, Manasijević, Srećko, Savić, Andrija, Milošević, Milena, "Removal of mesotrione by heterogeneous photocatalytic treatment using uv-vis lamp as light source" in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina (2023):383-387,
https://hdl.handle.net/21.15107/rcub_cer_6251 .

TY  - CONF
AU  - Bošnjaković, Jovana
AU  - Đuričković, Ivan
AU  - Milanovic, Jovana
AU  - Grujić, Dragana
AU  - Marinković, Aleksandar
AU  - Manasijević, Srećko
AU  - Milošević, Milena
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7056
AB  - In the last decades, the rapid development of industrial and agricultural activity caused the release of different organic/or nonorganic pollutants in water, earth, and air which lead to a threat to human health and the ecological environment. These pollutants contain toxic heavy metals, organic dyes, pesticides, pharmaceutics, and others (Aboua et al., 2015). Organic dyes are visible pollutants used as coloring agents in, textiles, plastics, paper, food industries, etc. For their removal from wastewater, eco-friendly treatment is needed. Among many process purification, the process of adsorption proved to be an effective method for removing pollutants that are present in water, such as pesticides, dyes, and heavy metal ions. Due to the specific properties of polluting substances, the goal is to develop a cheap, efficient, environmentally friendly material. Among them, cotton-based materials can be obtained from various natural sources and can be employed as inexpensive adsorbents. Their adsorption capacities for pollutants can be related to chemical treatment. In general, chemically modified cellulose exhibits higher adsorption capacities for various aquatic pollutants than their unmodified forms. In this aim, oxidized cotton fabric was used in this work, which was chemically modified with citric acid and ethyl lysinate, respectively. In order to activate the surface of the fabric for chemical modification and increase absorption ability, carboxyl and aldehyde functional groups were introduced using hydrogen peroxide. Then the oxidized cotton fabric was cross-linked with citric acid and ethyl lysinate (Co-CA-Et-Lys) using diisopropylcarboimide to promote ester and amide groups formation. The structure of obtained material was analyzed by using the ATR-FTIR technique. The resulting modified fabric proved to be a good adsorbent for the removal of cationic dyes malachite green (MG) and methylene blue (MB). Its adsorption behavior with respect to the pH, adsorption time, and initial concentration was investigated. Based on the obtained results, it was concluded that the adsorption equilibrium was reached after 1 h for both Malachite Green (MG) and Methylene Blue (MB). Adsorption kinetics data were satisfactorily fitted with the pseudo-second-order rate model (PSO), and adsorption data were best fitted using Langmuir model. The Langmuir maximum adsorption capacities for Co-CA-Et-Lys cross-linked fabric showed a maximum of 168.4 mg/g and 124.9 mg/g for MG and MB, respectively. Compared to other adsorbents based on natural materials, oxidized cotton fabric showed much better sorption properties.
PB  - Zvornik : Faculty of Technology
C3  - Proceedings - 8th International Congress “Engineering, Environment and Materials in Process Industry“ – EEM2023, 20-23 March 2023, Jahorina, Republic of Srpska, Bosnia and Herzegovina
T1  - Oxidized cotton fabric cross-linked with citric acid and ethyl lysinate for cationic dyes adsorption
SP  - 310
EP  - 316
UR  - https://hdl.handle.net/21.15107/rcub_cer_7056
ER  - 

@conference{
author = "Bošnjaković, Jovana and Đuričković, Ivan and Milanovic, Jovana and Grujić, Dragana and Marinković, Aleksandar and Manasijević, Srećko and Milošević, Milena",
year = "2023",
abstract = "In the last decades, the rapid development of industrial and agricultural activity caused the release of different organic/or nonorganic pollutants in water, earth, and air which lead to a threat to human health and the ecological environment. These pollutants contain toxic heavy metals, organic dyes, pesticides, pharmaceutics, and others (Aboua et al., 2015). Organic dyes are visible pollutants used as coloring agents in, textiles, plastics, paper, food industries, etc. For their removal from wastewater, eco-friendly treatment is needed. Among many process purification, the process of adsorption proved to be an effective method for removing pollutants that are present in water, such as pesticides, dyes, and heavy metal ions. Due to the specific properties of polluting substances, the goal is to develop a cheap, efficient, environmentally friendly material. Among them, cotton-based materials can be obtained from various natural sources and can be employed as inexpensive adsorbents. Their adsorption capacities for pollutants can be related to chemical treatment. In general, chemically modified cellulose exhibits higher adsorption capacities for various aquatic pollutants than their unmodified forms. In this aim, oxidized cotton fabric was used in this work, which was chemically modified with citric acid and ethyl lysinate, respectively. In order to activate the surface of the fabric for chemical modification and increase absorption ability, carboxyl and aldehyde functional groups were introduced using hydrogen peroxide. Then the oxidized cotton fabric was cross-linked with citric acid and ethyl lysinate (Co-CA-Et-Lys) using diisopropylcarboimide to promote ester and amide groups formation. The structure of obtained material was analyzed by using the ATR-FTIR technique. The resulting modified fabric proved to be a good adsorbent for the removal of cationic dyes malachite green (MG) and methylene blue (MB). Its adsorption behavior with respect to the pH, adsorption time, and initial concentration was investigated. Based on the obtained results, it was concluded that the adsorption equilibrium was reached after 1 h for both Malachite Green (MG) and Methylene Blue (MB). Adsorption kinetics data were satisfactorily fitted with the pseudo-second-order rate model (PSO), and adsorption data were best fitted using Langmuir model. The Langmuir maximum adsorption capacities for Co-CA-Et-Lys cross-linked fabric showed a maximum of 168.4 mg/g and 124.9 mg/g for MG and MB, respectively. Compared to other adsorbents based on natural materials, oxidized cotton fabric showed much better sorption properties.",
publisher = "Zvornik : Faculty of Technology",
journal = "Proceedings - 8th International Congress “Engineering, Environment and Materials in Process Industry“ – EEM2023, 20-23 March 2023, Jahorina, Republic of Srpska, Bosnia and Herzegovina",
title = "Oxidized cotton fabric cross-linked with citric acid and ethyl lysinate for cationic dyes adsorption",
pages = "310-316",
url = "https://hdl.handle.net/21.15107/rcub_cer_7056"
}

Bošnjaković, J., Đuričković, I., Milanovic, J., Grujić, D., Marinković, A., Manasijević, S.,& Milošević, M.. (2023). Oxidized cotton fabric cross-linked with citric acid and ethyl lysinate for cationic dyes adsorption. in Proceedings - 8th International Congress “Engineering, Environment and Materials in Process Industry“ – EEM2023, 20-23 March 2023, Jahorina, Republic of Srpska, Bosnia and Herzegovina
Zvornik : Faculty of Technology., 310-316.
https://hdl.handle.net/21.15107/rcub_cer_7056

Bošnjaković J, Đuričković I, Milanovic J, Grujić D, Marinković A, Manasijević S, Milošević M. Oxidized cotton fabric cross-linked with citric acid and ethyl lysinate for cationic dyes adsorption. in Proceedings - 8th International Congress “Engineering, Environment and Materials in Process Industry“ – EEM2023, 20-23 March 2023, Jahorina, Republic of Srpska, Bosnia and Herzegovina. 2023;:310-316.
https://hdl.handle.net/21.15107/rcub_cer_7056 .

Bošnjaković, Jovana, Đuričković, Ivan, Milanovic, Jovana, Grujić, Dragana, Marinković, Aleksandar, Manasijević, Srećko, Milošević, Milena, "Oxidized cotton fabric cross-linked with citric acid and ethyl lysinate for cationic dyes adsorption" in Proceedings - 8th International Congress “Engineering, Environment and Materials in Process Industry“ – EEM2023, 20-23 March 2023, Jahorina, Republic of Srpska, Bosnia and Herzegovina (2023):310-316,
https://hdl.handle.net/21.15107/rcub_cer_7056 .

TY  - CONF
AU  - Jovanović, Aleksandra A.
AU  - Rajab Elferjane, Muna
AU  - Milošević, Milena
AU  - Batinić, Petar
AU  - Bošnjaković, Jovana
AU  - Rančić, Milica
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7333
AB  - Wild thyme contains biologically active compounds, particularly polyphenols (flavonoids and phenolic acids) that exert antitumor, antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, analgesic, and spasmolytic activities. Nevertheless, the mentioned bioactive compounds have low stability, solubility, and bioavailability, thus their application is limited. Liposomal particles have been widely used for the encapsulation of bioactive components, due to their high structural integrity, stability during storage, and controlled release capability. In the present study, phospholipid-cholesterol liposomal particles, as the carrier for wild thyme extract, were developed. The stability of extract-loaded liposomes was monitored for 21 days by measuring vesicle size, polydispersity index (PDI), and zeta potential. The particle size and PDI of extract-loaded liposomes did not change drastically during 21 days of storage and amounted to ~450 nm and ~0.155, respectively. The zeta potential varied in the liposomes and started to decrease after 7 days of storage (from -21.0 mV to 20.3 mV, without a statistically significant difference), while the zeta potential value after 21 days was statistically significantly lower in comparison to the 1st day (19.3 mV). The beneficial effects of polyphenols on human health, as well as showed storage stability of the prepared liposomes highlight the use of the wild thyme extract-loaded phospholipid-cholesterol liposomal particles for potential application in food, pharmaceutical, and cosmetic industries.
PB  - Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala
C3  - Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia
T1  - The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles
T1  - Stabilnost lipozomalnih čestica sa inkapsuliranim ekstraktom majčine dušice
SP  - 96
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_cer_7333
ER  - 

@conference{
author = "Jovanović, Aleksandra A. and Rajab Elferjane, Muna and Milošević, Milena and Batinić, Petar and Bošnjaković, Jovana and Rančić, Milica and Marinković, Aleksandar",
year = "2023",
abstract = "Wild thyme contains biologically active compounds, particularly polyphenols (flavonoids and phenolic acids) that exert antitumor, antimicrobial, anti-inflammatory, antioxidant, immunomodulatory, analgesic, and spasmolytic activities. Nevertheless, the mentioned bioactive compounds have low stability, solubility, and bioavailability, thus their application is limited. Liposomal particles have been widely used for the encapsulation of bioactive components, due to their high structural integrity, stability during storage, and controlled release capability. In the present study, phospholipid-cholesterol liposomal particles, as the carrier for wild thyme extract, were developed. The stability of extract-loaded liposomes was monitored for 21 days by measuring vesicle size, polydispersity index (PDI), and zeta potential. The particle size and PDI of extract-loaded liposomes did not change drastically during 21 days of storage and amounted to ~450 nm and ~0.155, respectively. The zeta potential varied in the liposomes and started to decrease after 7 days of storage (from -21.0 mV to 20.3 mV, without a statistically significant difference), while the zeta potential value after 21 days was statistically significantly lower in comparison to the 1st day (19.3 mV). The beneficial effects of polyphenols on human health, as well as showed storage stability of the prepared liposomes highlight the use of the wild thyme extract-loaded phospholipid-cholesterol liposomal particles for potential application in food, pharmaceutical, and cosmetic industries.",
publisher = "Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala",
journal = "Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia",
title = "The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles, Stabilnost lipozomalnih čestica sa inkapsuliranim ekstraktom majčine dušice",
pages = "96-101",
url = "https://hdl.handle.net/21.15107/rcub_cer_7333"
}

Jovanović, A. A., Rajab Elferjane, M., Milošević, M., Batinić, P., Bošnjaković, J., Rančić, M.,& Marinković, A.. (2023). The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles. in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia
Serbian society of corrosion and materials protection (UISKoZaM) / Udruženje inženjera Srbije za koroziju i zaštitu materijala., 96-101.
https://hdl.handle.net/21.15107/rcub_cer_7333

Jovanović AA, Rajab Elferjane M, Milošević M, Batinić P, Bošnjaković J, Rančić M, Marinković A. The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles. in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia. 2023;:96-101.
https://hdl.handle.net/21.15107/rcub_cer_7333 .

Jovanović, Aleksandra A., Rajab Elferjane, Muna, Milošević, Milena, Batinić, Petar, Bošnjaković, Jovana, Rančić, Milica, Marinković, Aleksandar, "The Stability of Wild Thyme Extract-Loaded Phospholipid-Cholesterol Liposomal Particles" in Proceedings - XXIV YuCorr International Conference, Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, May 28-31, 2023, Divčibare, Serbia (2023):96-101,
https://hdl.handle.net/21.15107/rcub_cer_7333 .

TY  - CONF
AU  - Knežević, Nataša
AU  - Jovanović, Aleksandar
AU  - Bošnjaković, Jovana
AU  - Milošević, Milena
AU  - Rančić, Milica
AU  - Marinković, Aleksandar
AU  - Gržetić, Jelena
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6961
AB  - This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing theflammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization ofkraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, theAKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of wastepoly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites weredetermined using FTIR spectroscopy, dynamic-mechanical analysis (DMA), and tensile tests. The influence offunctionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermalproperties of the composite were tested according to the standard UL-94 method, based on which the highest categoryof heat-resistant materials is a composite with 12.5 wt.% acyl-functionalized lignin.
PB  - Belgrade : The Military Technical Institute
C3  - Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022
T1  - Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)
SP  - 405
EP  - 411
UR  - https://hdl.handle.net/21.15107/rcub_cer_6961
ER  - 

@conference{
author = "Knežević, Nataša and Jovanović, Aleksandar and Bošnjaković, Jovana and Milošević, Milena and Rančić, Milica and Marinković, Aleksandar and Gržetić, Jelena",
year = "2022",
abstract = "This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing theflammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization ofkraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, theAKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of wastepoly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites weredetermined using FTIR spectroscopy, dynamic-mechanical analysis (DMA), and tensile tests. The influence offunctionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermalproperties of the composite were tested according to the standard UL-94 method, based on which the highest categoryof heat-resistant materials is a composite with 12.5 wt.% acyl-functionalized lignin.",
publisher = "Belgrade : The Military Technical Institute",
journal = "Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022",
title = "Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)",
pages = "405-411",
url = "https://hdl.handle.net/21.15107/rcub_cer_6961"
}

Knežević, N., Jovanović, A., Bošnjaković, J., Milošević, M., Rančić, M., Marinković, A.,& Gržetić, J.. (2022). Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate). in Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022
Belgrade : The Military Technical Institute., 405-411.
https://hdl.handle.net/21.15107/rcub_cer_6961

Knežević N, Jovanović A, Bošnjaković J, Milošević M, Rančić M, Marinković A, Gržetić J. Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate). in Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022. 2022;:405-411.
https://hdl.handle.net/21.15107/rcub_cer_6961 .

Knežević, Nataša, Jovanović, Aleksandar, Bošnjaković, Jovana, Milošević, Milena, Rančić, Milica, Marinković, Aleksandar, Gržetić, Jelena, "Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)" in Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022 (2022):405-411,
https://hdl.handle.net/21.15107/rcub_cer_6961 .

TY  - JOUR
AU  - Knežević, Nataša
AU  - Jovanović, Aleksandar
AU  - Bošnjaković, Jovana
AU  - Milošević, Milena
AU  - Rančić, Milica
AU  - Marinković, Aleksandar
AU  - Gržetić, Jelena
AU  - Gamoudi, Houda
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6962
AB  - U ovom radu ispitivan je potencijal korišćenja akril-funkcionalizovanog kraft lignina (AKL) u smanjenju zapaljivosti polimernih kompozita na bazi recikliranih nezasićenih poliesterskih smola (NZPS). Akrilna funkcionalizacija kraft lignina je izvedena direktnom esterifikacijom slobodnih polifenolnih grupa sa akriloil hloridom, nakon čega je AKL umešan u NZP smolu sintetizovanu od poliola dobijenih katalitičkom depolimerizacijom otpadnog poli(etilen tereftalata). AKL je homogenizovan sa NZPS pri različitim masenim udelima: 2,5, 5,0, 7,5 i 12,5 mas.%. Strukturne i dinamičko-mehaničke karakteristike akril-funkcionalizovanog kraft lignina i kompozita određene su primenom FTIR spektroskopije, dinamičkomehaničke analize (DMA) i testova jednoosnog zatezanja. Proučavan je uticaj funkcionalizacije i masenog udela AKL na zatezna i termička svojstva NZPS. Vatrootporna svojstva kompozita su ispitivana prema standardnoj UL-94V metodi, na osnovu koje je kompozit sa 12,5 tež. % akril-funkcionalizovanog lignina dostigao najvišu kategorija toplotno otpornih materijala.
AB  - This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing the flammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization of kraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, the AKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of waste poly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5 wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites were determined using FTIR spectroscopy, dynamicmechanical analysis (DMA), and tensile tests. The influence of functionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermal properties of the composite were tested according to the standard UL-94 method, based on which the highest category of heat-resistant materials is a composite with 12.5 wt.% acylfunctionalized lignin.
PB  - Vojnotehnički institut, Beograd
T2  - Scientific Technical Review
T1  - Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata)
T1  - Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)
VL  - 72
IS  - 2
SP  - 32
EP  - 37
DO  - 10.5937/str2202032K
ER  - 

@article{
author = "Knežević, Nataša and Jovanović, Aleksandar and Bošnjaković, Jovana and Milošević, Milena and Rančić, Milica and Marinković, Aleksandar and Gržetić, Jelena and Gamoudi, Houda",
year = "2022",
abstract = "U ovom radu ispitivan je potencijal korišćenja akril-funkcionalizovanog kraft lignina (AKL) u smanjenju zapaljivosti polimernih kompozita na bazi recikliranih nezasićenih poliesterskih smola (NZPS). Akrilna funkcionalizacija kraft lignina je izvedena direktnom esterifikacijom slobodnih polifenolnih grupa sa akriloil hloridom, nakon čega je AKL umešan u NZP smolu sintetizovanu od poliola dobijenih katalitičkom depolimerizacijom otpadnog poli(etilen tereftalata). AKL je homogenizovan sa NZPS pri različitim masenim udelima: 2,5, 5,0, 7,5 i 12,5 mas.%. Strukturne i dinamičko-mehaničke karakteristike akril-funkcionalizovanog kraft lignina i kompozita određene su primenom FTIR spektroskopije, dinamičkomehaničke analize (DMA) i testova jednoosnog zatezanja. Proučavan je uticaj funkcionalizacije i masenog udela AKL na zatezna i termička svojstva NZPS. Vatrootporna svojstva kompozita su ispitivana prema standardnoj UL-94V metodi, na osnovu koje je kompozit sa 12,5 tež. % akril-funkcionalizovanog lignina dostigao najvišu kategorija toplotno otpornih materijala., This paper investigates the using potential of acryl-functionalized kraft lignin (AKL) in reducing the flammability of polymer composites based on recycled unsaturated polyester resins (UPR). Acryl functionalization of kraft lignin was performed by direct esterification of free polyphenolic groups with acryloyl chloride, after what, the AKL was blended in UPR resin synthesized from the polyols obtained by catalytic depolymerization of waste poly(ethylene terephthalate). The AKL was homogenized in UPR resin in different weight ratios: 2.5, 5.0, 7.5, and 12.5 wt.%. Structural and dynamic-mechanical characteristics of acryl-functionalized kraft lignin and composites were determined using FTIR spectroscopy, dynamicmechanical analysis (DMA), and tensile tests. The influence of functionalization and mass fraction of AKL on tensile and thermal properties of UPR resin was studied. The thermal properties of the composite were tested according to the standard UL-94 method, based on which the highest category of heat-resistant materials is a composite with 12.5 wt.% acylfunctionalized lignin.",
publisher = "Vojnotehnički institut, Beograd",
journal = "Scientific Technical Review",
title = "Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata), Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)",
volume = "72",
number = "2",
pages = "32-37",
doi = "10.5937/str2202032K"
}

Knežević, N., Jovanović, A., Bošnjaković, J., Milošević, M., Rančić, M., Marinković, A., Gržetić, J.,& Gamoudi, H.. (2022). Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata). in Scientific Technical Review
Vojnotehnički institut, Beograd., 72(2), 32-37.
https://doi.org/10.5937/str2202032K

Knežević N, Jovanović A, Bošnjaković J, Milošević M, Rančić M, Marinković A, Gržetić J, Gamoudi H. Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata). in Scientific Technical Review. 2022;72(2):32-37.
doi:10.5937/str2202032K .

Knežević, Nataša, Jovanović, Aleksandar, Bošnjaković, Jovana, Milošević, Milena, Rančić, Milica, Marinković, Aleksandar, Gržetić, Jelena, Gamoudi, Houda, "Vatrootporni kompoziti na bazi akril-funkcionalizovanog lignina i poliesterske smole dobijene od otpadnog poli(etilen tereftalata)" in Scientific Technical Review, 72, no. 2 (2022):32-37,
https://doi.org/10.5937/str2202032K . .

TY  - CONF
AU  - Čutović, Natalija
AU  - Vuksanović, Marija
AU  - Milošević, Milena
AU  - Bugarčić, Mladen
AU  - Bošnjaković, Jovana
AU  - Gržetić, Jelena
AU  - Marinković, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6960
AB  - Due to the increasing use and widespread of plastics, poly (ethylene terephthalate) (PET) and poly(vinyl chloride) (PVC) are becoming one of the major threats to the environment. The aim of thispaper is obtaining plasticizers from recycled PET, and hot/cold mixing thereof with PVC to producenew materials. Plasticizer was obtained from PET using ethylene glycol (EG) in the presence ofcatalyst FASCAT 4100, followed by treatment with maleic anhydride and finally 2-ethylhexanol(2-EtHex). The obtained glycolysate and plasticizer, individually or mixtures thereof, were used forthe production of polygranulates based on waste PVC in order to obtain an expanded mass ofhomogenized PVC with glycolysate/plasticizer. The abovementioned procedures and test results forthe regranulates and products indicate that the proposed technology offers a solution to the problemof waste PET and PVC through transesterification in order to obtain plasticizer based on PET andEG, called 2-EtHex/MA/РG/PET/EG/MA/2-EtHex used in the processing of PVC waste and inregranulate. The obtained regranulates are further processed by injection molding or extrusion intocommercial products such as slippers, footwear, boots, garden hoses, mats, floor mats, etc.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - Proceedings - 29th International Conference Ecological Truth and Environmental Research - EcoTER'22, 21-24 June 2022, Sokobanja, Serbia
T1  - Recycled poly(ethylene terephthalate) based – plasticizers for PVC regranulates production
SP  - 452
EP  - 458
UR  - https://hdl.handle.net/21.15107/rcub_cer_6960
ER  - 

@conference{
author = "Čutović, Natalija and Vuksanović, Marija and Milošević, Milena and Bugarčić, Mladen and Bošnjaković, Jovana and Gržetić, Jelena and Marinković, Aleksandar",
year = "2022",
abstract = "Due to the increasing use and widespread of plastics, poly (ethylene terephthalate) (PET) and poly(vinyl chloride) (PVC) are becoming one of the major threats to the environment. The aim of thispaper is obtaining plasticizers from recycled PET, and hot/cold mixing thereof with PVC to producenew materials. Plasticizer was obtained from PET using ethylene glycol (EG) in the presence ofcatalyst FASCAT 4100, followed by treatment with maleic anhydride and finally 2-ethylhexanol(2-EtHex). The obtained glycolysate and plasticizer, individually or mixtures thereof, were used forthe production of polygranulates based on waste PVC in order to obtain an expanded mass ofhomogenized PVC with glycolysate/plasticizer. The abovementioned procedures and test results forthe regranulates and products indicate that the proposed technology offers a solution to the problemof waste PET and PVC through transesterification in order to obtain plasticizer based on PET andEG, called 2-EtHex/MA/РG/PET/EG/MA/2-EtHex used in the processing of PVC waste and inregranulate. The obtained regranulates are further processed by injection molding or extrusion intocommercial products such as slippers, footwear, boots, garden hoses, mats, floor mats, etc.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "Proceedings - 29th International Conference Ecological Truth and Environmental Research - EcoTER'22, 21-24 June 2022, Sokobanja, Serbia",
title = "Recycled poly(ethylene terephthalate) based – plasticizers for PVC regranulates production",
pages = "452-458",
url = "https://hdl.handle.net/21.15107/rcub_cer_6960"
}

Čutović, N., Vuksanović, M., Milošević, M., Bugarčić, M., Bošnjaković, J., Gržetić, J.,& Marinković, A.. (2022). Recycled poly(ethylene terephthalate) based – plasticizers for PVC regranulates production. in Proceedings - 29th International Conference Ecological Truth and Environmental Research - EcoTER'22, 21-24 June 2022, Sokobanja, Serbia
Bor : University of Belgrade, Technical Faculty in Bor., 452-458.
https://hdl.handle.net/21.15107/rcub_cer_6960

Čutović N, Vuksanović M, Milošević M, Bugarčić M, Bošnjaković J, Gržetić J, Marinković A. Recycled poly(ethylene terephthalate) based – plasticizers for PVC regranulates production. in Proceedings - 29th International Conference Ecological Truth and Environmental Research - EcoTER'22, 21-24 June 2022, Sokobanja, Serbia. 2022;:452-458.
https://hdl.handle.net/21.15107/rcub_cer_6960 .

Čutović, Natalija, Vuksanović, Marija, Milošević, Milena, Bugarčić, Mladen, Bošnjaković, Jovana, Gržetić, Jelena, Marinković, Aleksandar, "Recycled poly(ethylene terephthalate) based – plasticizers for PVC regranulates production" in Proceedings - 29th International Conference Ecological Truth and Environmental Research - EcoTER'22, 21-24 June 2022, Sokobanja, Serbia (2022):452-458,
https://hdl.handle.net/21.15107/rcub_cer_6960 .