Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups

doi:10.1002/pat.1835

CORC > 化学研究所 > 中国科学院化学研究所

	Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups
	Jin, Rizhe 1; Li, Yuhan 1,2; Xing, Wei 1; Qiu, Xuepeng 1; Ji, Xiangling 1; Gao, Lianxun 1
刊名	POLYMERS FOR ADVANCED TECHNOLOGIES
	2012
卷号	23 期号:1 页码:31-37
关键词	Ionic Cross-linking Sulfonated Copolyimide Pyrimidine Group Fuel Cell
ISSN号	1042-7147
DOI	10.1002/pat.1835
英文摘要	A series of sulfonated copolyimides containing pyrimidine groups (SPIs) were synthesized by random copolymerization of 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA), 2-(4-aminophenyl)-5-aminopyrimidine (PAPRM), and 4,4'-diaminodiphenyl ether-2,2'-disulfonic acid (ODADS). Proton exchange treatment in 1.0?M sulfuric acid solution resulted in ionic cross-linking of the sulfonated copolymers due to the acid (sulfonic acid)-base (pyrimidine group) interactions and the membrane with more basic PAPRM moiety could absorb sulfuric acid to favor the proton transfer. The effects of the structure of the diamines on the properties of SPI membranes were evaluated by studying the membrane parameters including water uptake, proton conductivity, water stability, and methanol permeability. The basic pyrimidine groups introduced in the main chains could effectively resist membrane swelling due to the strong interchain interactions through basic pyrimidine groups and sulfonic acid groups. Compared with the corresponding uncross-linked copolyimides (NTDA/ODADS/ODA), the acidbase copolyimides displayed excellent water stability. The SPI membranes also exhibited improved mechanical properties and decreased methanol permeability. However, the cross-linked membranes showed lowered proton conductivities than the uncross-linked ones because a small part of the sulfonic acid groups had been consumed during the cross-linking process. Copyright (C) 2010 John Wiley & Sons, Ltd.
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000298263500005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/48161]
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, Peoples R China
推荐引用方式 GB/T 7714	Jin, Rizhe,Li, Yuhan,Xing, Wei,et al. Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups[J]. POLYMERS FOR ADVANCED TECHNOLOGIES,2012,23(1):31-37.
APA	Jin, Rizhe,Li, Yuhan,Xing, Wei,Qiu, Xuepeng,Ji, Xiangling,&Gao, Lianxun.(2012).Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups.POLYMERS FOR ADVANCED TECHNOLOGIES,23(1),31-37.
MLA	Jin, Rizhe,et al."Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups".POLYMERS FOR ADVANCED TECHNOLOGIES 23.1(2012):31-37.