Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy

Cyclization reaction of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) [P(AN-co-AMPS)] copolymer during thermal oxidative stabilization (TOS) process was investigated by FTIR and two dimensional (2D) correlation analysis technique. The results showed the mechanism of cyclization r...

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Autores principales:	Zhipeng He, Huichao Liu, Guang Yang, Chi Jiang, Muwei Ji, Jiali Yu, Mingliang Wang, Caizhen Zhu, Jian Xu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Cyclization kinetics Cyclization mechanism Polyacrylonitrile copolymer FTIR spectroscopy Two-dimensional correlation analysis technique Carbon fiber Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/a04f7f41ada846b191c871be2303e1e2
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spelling	oai:doaj.org-article:a04f7f41ada846b191c871be2303e1e22021-11-24T04:25:21ZCyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy0142-941810.1016/j.polymertesting.2020.106969https://doaj.org/article/a04f7f41ada846b191c871be2303e1e22021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S014294182032198Xhttps://doaj.org/toc/0142-9418Cyclization reaction of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) [P(AN-co-AMPS)] copolymer during thermal oxidative stabilization (TOS) process was investigated by FTIR and two dimensional (2D) correlation analysis technique. The results showed the mechanism of cyclization reaction at different temperatures were varying. At 200 °C, the cyclization reactions generated by autocatalytic cyclization mechanism. While at higher temperatures, the cyclization reactions took place through ionic cyclization mechanism and free radical cyclization mechanism. The AMPS comonomer could reduce the heat release of cyclization reactions and improve the stability at 200 and 230 °C. At higher temperatures, the cyclization reactions were facilitated rapidly. However, the oxidation and degradation reactions were also intense, which will cause the molecular chain to break and defects in the final carbon fibers (CFs). This research has theoretical guiding significance for the optimization of heat treatment conditions for PAN copolymers used as CFs.Zhipeng HeHuichao LiuGuang YangChi JiangMuwei JiJiali YuMingliang WangCaizhen ZhuJian XuElsevierarticleCyclization kineticsCyclization mechanismPolyacrylonitrile copolymerFTIR spectroscopyTwo-dimensional correlation analysis techniqueCarbon fiberPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106969- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cyclization kinetics Cyclization mechanism Polyacrylonitrile copolymer FTIR spectroscopy Two-dimensional correlation analysis technique Carbon fiber Polymers and polymer manufacture TP1080-1185
spellingShingle	Cyclization kinetics Cyclization mechanism Polyacrylonitrile copolymer FTIR spectroscopy Two-dimensional correlation analysis technique Carbon fiber Polymers and polymer manufacture TP1080-1185 Zhipeng He Huichao Liu Guang Yang Chi Jiang Muwei Ji Jiali Yu Mingliang Wang Caizhen Zhu Jian Xu Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
description	Cyclization reaction of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) [P(AN-co-AMPS)] copolymer during thermal oxidative stabilization (TOS) process was investigated by FTIR and two dimensional (2D) correlation analysis technique. The results showed the mechanism of cyclization reaction at different temperatures were varying. At 200 °C, the cyclization reactions generated by autocatalytic cyclization mechanism. While at higher temperatures, the cyclization reactions took place through ionic cyclization mechanism and free radical cyclization mechanism. The AMPS comonomer could reduce the heat release of cyclization reactions and improve the stability at 200 and 230 °C. At higher temperatures, the cyclization reactions were facilitated rapidly. However, the oxidation and degradation reactions were also intense, which will cause the molecular chain to break and defects in the final carbon fibers (CFs). This research has theoretical guiding significance for the optimization of heat treatment conditions for PAN copolymers used as CFs.
format	article
author	Zhipeng He Huichao Liu Guang Yang Chi Jiang Muwei Ji Jiali Yu Mingliang Wang Caizhen Zhu Jian Xu
author_facet	Zhipeng He Huichao Liu Guang Yang Chi Jiang Muwei Ji Jiali Yu Mingliang Wang Caizhen Zhu Jian Xu
author_sort	Zhipeng He
title	Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
title_short	Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
title_full	Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
title_fullStr	Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
title_full_unstemmed	Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy
title_sort	cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by ftir spectroscopy
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/a04f7f41ada846b191c871be2303e1e2
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_version_	1718415993831686144

Cyclization mechanism and kinetics of poly(acrylonitrile-co-2-acrylamido-2-methylpropane sulfonic acid) copolymer investigated by FTIR spectroscopy

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