Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor

Bifunctional comonomer 2-methylenesuccinamic acid (MLA) was designed and synthesized to prepare acrylonitrile copolymer P (AN-<i>co</i>-MLA) using mixed solvent polymerization as a carbon fiber precursor. The effect of monomer feed ratios on the structure and stabilization were character...

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Autores principales:	Shuxian Zhang, Yanjin Dang, Xuepeng Ni, Chunshun Yuan, Huifang Chen, Anqi Ju
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	2-methylenesuccinamic acid mixed solvents polymerization carbon fiber stabilization thermodynamic properties Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/c9a4f3c61a174ab9ab8dab82ed7d22d8
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spelling	oai:doaj.org-article:c9a4f3c61a174ab9ab8dab82ed7d22d82021-11-25T18:47:43ZPreparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor10.3390/polym132238622073-4360https://doaj.org/article/c9a4f3c61a174ab9ab8dab82ed7d22d82021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3862https://doaj.org/toc/2073-4360Bifunctional comonomer 2-methylenesuccinamic acid (MLA) was designed and synthesized to prepare acrylonitrile copolymer P (AN-<i>co</i>-MLA) using mixed solvent polymerization as a carbon fiber precursor. The effect of monomer feed ratios on the structure and stabilization were characterized by elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), X-ray diffraction (XRD), proton nuclear magnetic (<sup>1</sup>H NMR), and differential scanning calorimetry (DSC) for the P (AN-<i>co</i>-MLA) copolymers. The results indicated that both the conversion and molecular weight of polymerization reduce gradually when the MLA content is increased in the feed and that bifunctional comonomer MLA possesses a larger reactivity ratio than acrylonitrile (AN). P (AN-<i>co</i>-MLA) shows improved stabilization compared to the PAN homopolymer and poly (acrylonitrile-acrylic acid-methacrylic acid) [P (AN-AA-MA)], showing features such as lower initiation temperature, smaller cyclic activation energy, wider exothermic peak, and a larger stabilization degree, which are due to the ionic cyclization reaction initiated by MLA, confirming that the as-prepared P (AN-<i>co</i>-MLA) is the potential precursor for high-performance carbon fiber.Shuxian ZhangYanjin DangXuepeng NiChunshun YuanHuifang ChenAnqi JuMDPI AGarticle2-methylenesuccinamic acidmixed solvents polymerizationcarbon fiber stabilizationthermodynamic propertiesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3862, p 3862 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2-methylenesuccinamic acid mixed solvents polymerization carbon fiber stabilization thermodynamic properties Organic chemistry QD241-441
spellingShingle	2-methylenesuccinamic acid mixed solvents polymerization carbon fiber stabilization thermodynamic properties Organic chemistry QD241-441 Shuxian Zhang Yanjin Dang Xuepeng Ni Chunshun Yuan Huifang Chen Anqi Ju Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
description	Bifunctional comonomer 2-methylenesuccinamic acid (MLA) was designed and synthesized to prepare acrylonitrile copolymer P (AN-<i>co</i>-MLA) using mixed solvent polymerization as a carbon fiber precursor. The effect of monomer feed ratios on the structure and stabilization were characterized by elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), X-ray diffraction (XRD), proton nuclear magnetic (<sup>1</sup>H NMR), and differential scanning calorimetry (DSC) for the P (AN-<i>co</i>-MLA) copolymers. The results indicated that both the conversion and molecular weight of polymerization reduce gradually when the MLA content is increased in the feed and that bifunctional comonomer MLA possesses a larger reactivity ratio than acrylonitrile (AN). P (AN-<i>co</i>-MLA) shows improved stabilization compared to the PAN homopolymer and poly (acrylonitrile-acrylic acid-methacrylic acid) [P (AN-AA-MA)], showing features such as lower initiation temperature, smaller cyclic activation energy, wider exothermic peak, and a larger stabilization degree, which are due to the ionic cyclization reaction initiated by MLA, confirming that the as-prepared P (AN-<i>co</i>-MLA) is the potential precursor for high-performance carbon fiber.
format	article
author	Shuxian Zhang Yanjin Dang Xuepeng Ni Chunshun Yuan Huifang Chen Anqi Ju
author_facet	Shuxian Zhang Yanjin Dang Xuepeng Ni Chunshun Yuan Huifang Chen Anqi Ju
author_sort	Shuxian Zhang
title	Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
title_short	Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
title_full	Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
title_fullStr	Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
title_full_unstemmed	Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor
title_sort	preparation and stabilization of high molecular weight poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for carbon fiber precursor
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c9a4f3c61a174ab9ab8dab82ed7d22d8
work_keys_str_mv	AT shuxianzhang preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor AT yanjindang preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor AT xuepengni preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor AT chunshunyuan preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor AT huifangchen preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor AT anqiju preparationandstabilizationofhighmolecularweightpolyacrylonitrileicoi2methylenesuccinamicacidforcarbonfiberprecursor
_version_	1718410738690686976

Preparation and Stabilization of High Molecular Weight Poly (acrylonitrile-<i>co</i>-2-methylenesuccinamic acid) for Carbon Fiber Precursor

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