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 .