Fire-resistant composites based on acrylic-functionalized lignin and polyester resin obtained from waste poly(ethylene terephthalate)
Authors
Knežević, NatašaJovanović, Aleksandar
Bošnjaković, Jovana
Milošević, Milena
Rančić, Milica
Marinković, Aleksandar
Gržetić, Jelena
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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 ca...tegoryof heat-resistant materials is a composite with 12.5 wt.% acyl-functionalized lignin.
Keywords:
lignin modification / UPR-lignin composites / dynamic-mechanical testing / tensile testing / flame retardancySource:
Proceedings - 10th International Scientific Conference on Defensive Technologies, OTEH 2022, Belgrade, 13-14 October 2022, 2022, 405-411Publisher:
- Belgrade : The Military Technical Institute
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-MESTD-inst-2020-200023)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200066 (Lola Institute, Belgrade) (RS-MESTD-inst-2020-200066)
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IHTMTY - 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 .