Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone

doi:10.1002/app.30929

CORC > 化学研究所 > 中国科学院化学研究所

	Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone
	Lei, Rui 1,2; Kang, Chuanqing 1,2; Huang, Yunjie 1,2; Li, Yuhan 1,2; Wang, Xi 1,2; Jin, Rizhe 1; Qiu, Xuepeng 1; Ji, Xiangling 1; Xing, Wei 1; Gao, Lianxun 1
刊名	JOURNAL OF APPLIED POLYMER SCIENCE
	2009-12-05
卷号	114 期号:5 页码:3190-3197
关键词	Sulfonated Polyimide Pyridine Acid-base Interaction Water Stability Proton Conductivity
ISSN号	0021-8995
DOI	10.1002/app.30929
英文摘要	A series of sulfonated polyimides (SPIs) containing pyridine ring in the polymer backbone were synthesized by the polycondensation of 1,4,5,8-naphthalene-tetracarboxylic dianhydride (NTDA), 5-(2,6-bis(4-arninophenyl)pyridin-4-yl)-2-methoxy benzene sulfonic acid (SDAM), and 4,4'-diaminodiphenyl ether (ODA). Flexible, transparent, and tough membranes were obtained. Property study revealed that all the membranes displayed high thermal stability with the desulfonation and decomposition temperature higher than 290 and 540 degrees C, respectively, as well as good mechanical property with Young's modulus larger than 1.0 GPa, maximum strength (MS) on a scale of 60-80 MPa, and elongation at break (EB) ranged from 41.79 to 75.17%. More importantly, the new materials exhibited small water uptake and excellent dimensional stability with the highest sulfonated SPI-80 showing the maximum water uptake of 36.1%, and maximum swollen ratio of Delta t = 0.038 and Delta l = 0.026, respectively (Delta t and Delta l stands for the thickness and diameter change of the film, respectively). The high water stability exhibited by the SPI films is attributed to the formation of inner salts and/or ionic crosslinking between the sulfonic acid and pyridine functional groups, which suppresses the water uptake ability of sulfonic acid and strengthened the interpolymer chain interactions. Thus, the excellent water stability, good thermal and mechanical properties, and the technologically applicable conductivity of SPI-80 render this material attractive for proton exchange membrane (PEM) application. (C) 2009 Wiley Periodicals, Inc. J Appl Polyrn Sci 114: 3190-3197, 2009
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000270497200076
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67769]
专题	中国科学院化学研究所
通讯作者	Gao, Lianxun
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lei, Rui,Kang, Chuanqing,Huang, Yunjie,et al. Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2009,114(5):3190-3197.
APA	Lei, Rui.,Kang, Chuanqing.,Huang, Yunjie.,Li, Yuhan.,Wang, Xi.,...&Gao, Lianxun.(2009).Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone.JOURNAL OF APPLIED POLYMER SCIENCE,114(5),3190-3197.
MLA	Lei, Rui,et al."Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone".JOURNAL OF APPLIED POLYMER SCIENCE 114.5(2009):3190-3197.