Performance and structure changes of the aromatic co-polysulfonamide fibers during thermal-oxidative aging process

doi:10.1002/app.44078

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Performance and structure changes of the aromatic co-polysulfonamide fibers during thermal-oxidative aging process
	Yu, JC; Chen, K; Li, XY; Tian, F; Chen, SH; Zhang, YM; Wang, HP; Zhang, YM (reprint author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
	2016
发表期刊	JOURNAL OF APPLIED POLYMER SCIENCE
ISSN	0021-8995
卷号	133 期号:41 页码:-
文章类型	期刊论文
摘要	The changes in performance during thermal-oxidative aging process of the aromatic co-polysulfonamide (co-PSA) fibers over a broad temperature range from 250 degrees C to 320 degrees C have been investigated. In addition, the mechanism of thermal-oxidative aging process has been studied by using structural information obtained from the fibers at varying length scales. The results showed that a significant reduction in tensile strength was observed compared with that of initial modulus during aging process. Macroscopically, thermal-oxidative aging mainly causes color changes of fibers and thermally induced macro defects begin to appear only at 320 degrees C for 100 h. On a micro level, the crystal structure of fibers remained stable and did not show significant changes expect that aging at 320 degrees C. In addition, thermo-degradation as well as crosslinking has been observed primarily in amorphous region. With the increase of temperature and time duration, the crosslinking became more dominant and crosslinking density increases. Correspondingly, the fibril length decreases due to degradation and then increases due to the formation of crosslinked structures within the fibers. The results suggest that molecular degradation is the main cause of strength loss and the formation of crosslinking structure within the fibers contributes to the retention of modulus and improvement of creep resistance. (C) 2016 Wiley Periodicals, Inc.
关键词	Ageing Fibers Structure-property Relations Thermal Properties
DOI	10.1002/app.44078
收录类别	SCI
语种	英语
WOS记录号	WOS:000380728200013
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/26595
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Zhang, YM (reprint author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
推荐引用方式 GB/T 7714	Yu, JC,Chen, K,Li, XY,et al. Performance and structure changes of the aromatic co-polysulfonamide fibers during thermal-oxidative aging process[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2016,133(41):-.
APA	Yu, JC.,Chen, K.,Li, XY.,Tian, F.,Chen, SH.,...&Zhang, YM .(2016).Performance and structure changes of the aromatic co-polysulfonamide fibers during thermal-oxidative aging process.JOURNAL OF APPLIED POLYMER SCIENCE,133(41),-.
MLA	Yu, JC,et al."Performance and structure changes of the aromatic co-polysulfonamide fibers during thermal-oxidative aging process".JOURNAL OF APPLIED POLYMER SCIENCE 133.41(2016):-.

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