TY  - CONF
AU  - Knežević, Nataša
AU  - Jovanović, Aleksandar
AU  - Bugarčić, Mladen
AU  - Vuksanović, Marija
AU  - Milošević, Milena
AU  - Pešić, Ivan
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7401
AB  - Cotton-based membranes, due to their exceptional biocompatibility and sustainability,have attracted considerable attention in various applications, especially in the field of bio andgreen technologies. This study investigates the biodegradation potential of cotton membranesmodified with TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) radical and citric acid (CA),with the aim of improving their properties and facilitating environmentally friendly disposal.TEMPO radicals, in conjunction with the crosslinker citric acid, are incorporated into thecellulose structure through a novel modification process. The citric acid component acted as aplasticizer, increasing the amorphous parts of the cellulose and promoting enzymatic attack.The TEMPO radical, with its nitroxyl group, contributed to the oxidation of cellulose, furtherfacilitating biodegradation.The biodegradation aspect of these modified membranes was investigated incontrolled environmental conditions (Soil Burial test), simulating natural scenarios (humidity,influence of enzymes, and bacteria). Biodegradation parameters such as weight loss,structural changes, and degradation kinetics were examined during 90 days. Characterizationof the structure was performed using FTIR and SEM methods.Our findings suggest that cellulosic membranes possess complete (100%)biodegradability after 70 days compared to unmodified membranes. Obtained result shedlight on the potential of membranes modified in this way as sustainable and biodegradablealternatives in various applications. The results emphasize their ecological nature and abilityto reduce environmental stress. Such cellulose-based materials promise a much greener futurein biotechnology, healthcare, and environmental protection.
PB  - Belgrade : University of Belgrade, Faculty of Technology and Metallurgy
C3  - International Conference: Biochemical Engineering and Biotechnology for Young Scientists, Book of abstracts
T1  - Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid
SP  - 42
EP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_cer_7401
ER  - 

@conference{
author = "Knežević, Nataša and Jovanović, Aleksandar and Bugarčić, Mladen and Vuksanović, Marija and Milošević, Milena and Pešić, Ivan and Marinković, Aleksandar",
year = "2023",
abstract = "Cotton-based membranes, due to their exceptional biocompatibility and sustainability,have attracted considerable attention in various applications, especially in the field of bio andgreen technologies. This study investigates the biodegradation potential of cotton membranesmodified with TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) radical and citric acid (CA),with the aim of improving their properties and facilitating environmentally friendly disposal.TEMPO radicals, in conjunction with the crosslinker citric acid, are incorporated into thecellulose structure through a novel modification process. The citric acid component acted as aplasticizer, increasing the amorphous parts of the cellulose and promoting enzymatic attack.The TEMPO radical, with its nitroxyl group, contributed to the oxidation of cellulose, furtherfacilitating biodegradation.The biodegradation aspect of these modified membranes was investigated incontrolled environmental conditions (Soil Burial test), simulating natural scenarios (humidity,influence of enzymes, and bacteria). Biodegradation parameters such as weight loss,structural changes, and degradation kinetics were examined during 90 days. Characterizationof the structure was performed using FTIR and SEM methods.Our findings suggest that cellulosic membranes possess complete (100%)biodegradability after 70 days compared to unmodified membranes. Obtained result shedlight on the potential of membranes modified in this way as sustainable and biodegradablealternatives in various applications. The results emphasize their ecological nature and abilityto reduce environmental stress. Such cellulose-based materials promise a much greener futurein biotechnology, healthcare, and environmental protection.",
publisher = "Belgrade : University of Belgrade, Faculty of Technology and Metallurgy",
journal = "International Conference: Biochemical Engineering and Biotechnology for Young Scientists, Book of abstracts",
title = "Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_cer_7401"
}

Knežević, N., Jovanović, A., Bugarčić, M., Vuksanović, M., Milošević, M., Pešić, I.,& Marinković, A.. (2023). Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid. in International Conference: Biochemical Engineering and Biotechnology for Young Scientists, Book of abstracts
Belgrade : University of Belgrade, Faculty of Technology and Metallurgy., 42-42.
https://hdl.handle.net/21.15107/rcub_cer_7401

Knežević N, Jovanović A, Bugarčić M, Vuksanović M, Milošević M, Pešić I, Marinković A. Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid. in International Conference: Biochemical Engineering and Biotechnology for Young Scientists, Book of abstracts. 2023;:42-42.
https://hdl.handle.net/21.15107/rcub_cer_7401 .

Knežević, Nataša, Jovanović, Aleksandar, Bugarčić, Mladen, Vuksanović, Marija, Milošević, Milena, Pešić, Ivan, Marinković, Aleksandar, "Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid" in International Conference: Biochemical Engineering and Biotechnology for Young Scientists, Book of abstracts (2023):42-42,
https://hdl.handle.net/21.15107/rcub_cer_7401 .

TY  - JOUR
AU  - Vuksanović, Marija
AU  - Jovanović, Aleksandar A.
AU  - Milošević, Milena
AU  - Gržetić, Jelena
AU  - Stajčić, Ivana
AU  - Jančić-Heinemann, Radmila
AU  - Marinković, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5628
AB  - Predmet ovog istraživanja je sinteza glikolizata iz recikliranog poli(etilen tereftalata) (PET) postupcima depolimerizacije pomoću dietilenglikoala (DEG) u prisustvu katalizatora FASCAT 4100. Dobijeni glikolizat je zatim tretiran anhidridom maleinske kiseline i na kraju 2-oktanolom (2-EtHex pri čemu se dobija 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plastifikator. Karakterizacija dobijenog plastifikatora izvršena je infracrvenom spektroskopijom sa Furijeovom transformacijom (FTIR) i NMR spektroskopijom. Dobijeni plastifikatori (10 tež. %) su umešani u bitumen a zatim u su izvršena ispitivanja mehaničkih svojstava dobijenih proizvoda.
AB  - The subject of this study is the synthesis of glycolysates from recycled poly (ethylene terephthalate) (PET) by depolymerization using diethylene glycol (DEG) in the presence of catalyst FASCAT 4100. The resulting glycolysate was then treated with maleic anhydride and finally with 2-octanol to obtain a 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plasticizer. The characterization of the obtained plasticizer was performed by infrared spectroscopy with Fourier transform (FTIR) and NMR spectroscopy. The obtained plasticizers were mixed into bitumen with 10 wt. % and tests of mechanical properties of obtained products were performed.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Testing of mechanical properties of bitumen products obtained using polyethylene tereftalate-based plastifiers
T1  - Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a
VL  - 77
IS  - 5
SP  - 413
EP  - 417
DO  - 10.5937/tehnika2204413V
ER  - 

@article{
author = "Vuksanović, Marija and Jovanović, Aleksandar A. and Milošević, Milena and Gržetić, Jelena and Stajčić, Ivana and Jančić-Heinemann, Radmila and Marinković, Aleksandar",
year = "2022",
abstract = "Predmet ovog istraživanja je sinteza glikolizata iz recikliranog poli(etilen tereftalata) (PET) postupcima depolimerizacije pomoću dietilenglikoala (DEG) u prisustvu katalizatora FASCAT 4100. Dobijeni glikolizat je zatim tretiran anhidridom maleinske kiseline i na kraju 2-oktanolom (2-EtHex pri čemu se dobija 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plastifikator. Karakterizacija dobijenog plastifikatora izvršena je infracrvenom spektroskopijom sa Furijeovom transformacijom (FTIR) i NMR spektroskopijom. Dobijeni plastifikatori (10 tež. %) su umešani u bitumen a zatim u su izvršena ispitivanja mehaničkih svojstava dobijenih proizvoda., The subject of this study is the synthesis of glycolysates from recycled poly (ethylene terephthalate) (PET) by depolymerization using diethylene glycol (DEG) in the presence of catalyst FASCAT 4100. The resulting glycolysate was then treated with maleic anhydride and finally with 2-octanol to obtain a 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plasticizer. The characterization of the obtained plasticizer was performed by infrared spectroscopy with Fourier transform (FTIR) and NMR spectroscopy. The obtained plasticizers were mixed into bitumen with 10 wt. % and tests of mechanical properties of obtained products were performed.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Testing of mechanical properties of bitumen products obtained using polyethylene tereftalate-based plastifiers, Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a",
volume = "77",
number = "5",
pages = "413-417",
doi = "10.5937/tehnika2204413V"
}

Vuksanović, M., Jovanović, A. A., Milošević, M., Gržetić, J., Stajčić, I., Jančić-Heinemann, R.,& Marinković, A.. (2022). Testing of mechanical properties of bitumen products obtained using polyethylene tereftalate-based plastifiers. in Tehnika
Beograd : Savez inženjera i tehničara Srbije., 77(5), 413-417.
https://doi.org/10.5937/tehnika2204413V

Vuksanović M, Jovanović AA, Milošević M, Gržetić J, Stajčić I, Jančić-Heinemann R, Marinković A. Testing of mechanical properties of bitumen products obtained using polyethylene tereftalate-based plastifiers. in Tehnika. 2022;77(5):413-417.
doi:10.5937/tehnika2204413V .

Vuksanović, Marija, Jovanović, Aleksandar A., Milošević, Milena, Gržetić, Jelena, Stajčić, Ivana, Jančić-Heinemann, Radmila, Marinković, Aleksandar, "Testing of mechanical properties of bitumen products obtained using polyethylene tereftalate-based plastifiers" in Tehnika, 77, no. 5 (2022):413-417,
https://doi.org/10.5937/tehnika2204413V . .

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  - CONF
AU  - Marinković, Aleksandar
AU  - Milosavljević, Milutin
AU  - Kovačević, Tihomir
AU  - Kovačina, Jovanka
AU  - Milošević, Milena
AU  - Jovanović, Aleksandar
AU  - Slobodan, Petrović
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6867
AB  - Razvijena je inovativna tehnologija za proizvodnju gelnih premaza i materijala koji smanjuju zapaljivost
na bazi nezasićenih poliestarskih smola (eng. Unsaturated polyester resins-UPR). Ovi materijali su
sintetisani iz sirovina dobijenih iz otpadnog poli(etilen) tereftalata (PET) i bio-obnovljivih izvora. Ovaj
proces čine tri faze: (I) sinteza hidroksilnih, karboksilnih i vinilnih termalnih monomera kao i anhidrida
maleinske kiseline na bio-osnovi iz 5-hidroksimetilfurfurala (HMF) i levulinske kiseline; proizvodi sa
termalnim hidroksilnim grupama, zasnovani su na otpadnom PET-u i karboksil, hidroksil i vinil termalnom
fosfatnom estru kraft lignina; (II) sinteza bio-UPR smola koristeći proizvode iz prve faze i vinil derivate iz
HMF-a i kraft lignina kao vezujućeg agensa za UPR smole; (III) homogenizacija UPR smola sa aditivima
(dispergatori, pigmenti, punioci i aditivi sintetisani u prvoj fazi) da bi dobili gelni premaz i sjedinili ga sa
usporivačem plamena (derivati fosfatnog estra lignina) i proizveli protiv požarni materijal. Predstavljene
tehnologije poštuju ekološke standarde kao i principe zelene i cirkularne ekonomije. Dobijeni proizvodi
mogu se primeniti u raznim industrijama (građevinarstvo, rudarstvo, prerada polimera itd.)
T1  - Ekološki prihvatljiva tehnologija za proizvodnju gelnih premaza i protivpožarnih materijala koristeći bio-obnovljive i otpadne materijale
UR  - https://hdl.handle.net/21.15107/rcub_cer_6867
ER  - 

@conference{
author = "Marinković, Aleksandar and Milosavljević, Milutin and Kovačević, Tihomir and Kovačina, Jovanka and Milošević, Milena and Jovanović, Aleksandar and Slobodan, Petrović",
year = "2020",
abstract = "Razvijena je inovativna tehnologija za proizvodnju gelnih premaza i materijala koji smanjuju zapaljivost
na bazi nezasićenih poliestarskih smola (eng. Unsaturated polyester resins-UPR). Ovi materijali su
sintetisani iz sirovina dobijenih iz otpadnog poli(etilen) tereftalata (PET) i bio-obnovljivih izvora. Ovaj
proces čine tri faze: (I) sinteza hidroksilnih, karboksilnih i vinilnih termalnih monomera kao i anhidrida
maleinske kiseline na bio-osnovi iz 5-hidroksimetilfurfurala (HMF) i levulinske kiseline; proizvodi sa
termalnim hidroksilnim grupama, zasnovani su na otpadnom PET-u i karboksil, hidroksil i vinil termalnom
fosfatnom estru kraft lignina; (II) sinteza bio-UPR smola koristeći proizvode iz prve faze i vinil derivate iz
HMF-a i kraft lignina kao vezujućeg agensa za UPR smole; (III) homogenizacija UPR smola sa aditivima
(dispergatori, pigmenti, punioci i aditivi sintetisani u prvoj fazi) da bi dobili gelni premaz i sjedinili ga sa
usporivačem plamena (derivati fosfatnog estra lignina) i proizveli protiv požarni materijal. Predstavljene
tehnologije poštuju ekološke standarde kao i principe zelene i cirkularne ekonomije. Dobijeni proizvodi
mogu se primeniti u raznim industrijama (građevinarstvo, rudarstvo, prerada polimera itd.)",
title = "Ekološki prihvatljiva tehnologija za proizvodnju gelnih premaza i protivpožarnih materijala koristeći bio-obnovljive i otpadne materijale",
url = "https://hdl.handle.net/21.15107/rcub_cer_6867"
}

Marinković, A., Milosavljević, M., Kovačević, T., Kovačina, J., Milošević, M., Jovanović, A.,& Slobodan, P.. (2020). Ekološki prihvatljiva tehnologija za proizvodnju gelnih premaza i protivpožarnih materijala koristeći bio-obnovljive i otpadne materijale. .
https://hdl.handle.net/21.15107/rcub_cer_6867

Marinković A, Milosavljević M, Kovačević T, Kovačina J, Milošević M, Jovanović A, Slobodan P. Ekološki prihvatljiva tehnologija za proizvodnju gelnih premaza i protivpožarnih materijala koristeći bio-obnovljive i otpadne materijale. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_6867 .

Marinković, Aleksandar, Milosavljević, Milutin, Kovačević, Tihomir, Kovačina, Jovanka, Milošević, Milena, Jovanović, Aleksandar, Slobodan, Petrović, "Ekološki prihvatljiva tehnologija za proizvodnju gelnih premaza i protivpožarnih materijala koristeći bio-obnovljive i otpadne materijale" (2020),
https://hdl.handle.net/21.15107/rcub_cer_6867 .