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

	Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups
	Jin RZ ; Li YH ; Xing W ; Qiu XP ; Ji XL ; Gao LX
刊名	polymers for advanced technologies
	2012
卷号	23 期号:1 页码:31-37
关键词	PROTON-EXCHANGE MEMBRANES 1H-1 FUEL-CELL APPLICATIONS 2 POLYIMIDE IONOMERS 4-TRIAZOLE ELECTROLYTE MEMBRANES ACID CONDUCTIVITY DIANHYDRIDE DIAMINES
ISSN号	1042-7147
通讯作者	gao lx
中文摘要	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.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000298263500005
公开日期	2013-09-03
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48774]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Jin RZ,Li YH,Xing W,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 RZ,Li YH,Xing W,Qiu XP,Ji XL,&Gao LX.(2012).Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups.polymers for advanced technologies,23(1),31-37.
MLA	Jin RZ,et al."Preparation and properties of ionic cross-linked sulfonated copolyimide membranes containing pyrimidine groups".polymers for advanced technologies 23.1(2012):31-37.