Linear sulfonated polyimides containing polyhedral oligomeric silsesquioxane (POSS) in main chain for proton exchange membranes

doi:10.1016/j.jpowsour.2015.04.174

兰州大学机构库 >化学化工学院

	Linear sulfonated polyimides containing polyhedral oligomeric silsesquioxane (POSS) in main chain for proton exchange membranes
	Gong, CL(宫琛亮); Zhang, Shujiang
	2015-09-20
Source Publication	Journal of Power Sources
ISSN	0378-7753
Volume	2015 Issue:290 Pages:42-52
Abstract	Linear sulfonated polyimides (SPI's) incorporating a difunctional POSS unit, namely Phenyl8bisaniline-POSS, in the backbone of the main chain at concentration levels of 3, 5 and 10 mol% yield proton exchange membranes. Compared with other POSS hybrid membranes fabricated by direct blending or cross-linking methods, the ultrafine POSS aggregates show more uniform distribution and the obtained SPI-POSS co-polymers exhibit dramatically enhanced comprehensive properties as proton exchange membranes. The results reveal that the POSS in the SPI main chain facilitates the dispersion of POSS as a nano-filler and increases the confined bound water molecules within the formation of continuous proton transformation channels, thereby increasing the proton conductivity in comparison with the plain SPI without POSS. For example, the POSS-SPI membranes with 5 and 10 mol% POSS show higher conductivity in comparison to the POSS free SPI (0.114 and 0.132 S cm-1vs. 0.0998 S cm-1) at 80 °C. Moreover, the obtained POSS-SPI membranes also process enhanced oxidative and hydrolytic stabilities, low swelling ratio combined with high water uptake, adequate thermal stability and mechanical properties, as well as low methanol permeability. © 2015 Elsevier B.V. All rights reserved.
Keyword	Membranes Blending Chains Crosslinking Mechanical permeability Mechanical properties Molecules Oligomers Polyimides Bound water molecules Comprehensive properties Hydrolytic stability Low methanol permeability Polyhedral oligomeric silsesquioxanes Proton exchange membranes Sulfonated polyimides Uniform distribution
Publisher	ELSEVIER
DOI	10.1016/j.jpowsour.2015.04.174
Publication Place	AMSTERDAM
Indexed By	SCIE ; EI
Language	英语
First Inst	是
Funding Project	国家自然科学基金项目 ; 中央高校基本科研业务费专项资金
Project Number	National Natural Science Foundation of China [21204033] ; Fundamental Research for Central Universities [lzujbky-2015-25]
WOS ID	WOS:000356550900006
Funding Organization	NSFC ; LZU
Subtype	Article
EI ID	20151900835008
IRID	20151900835008
Department	兰州大学化学化工学院
Citation statistics	Cited Times:39[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	https://ir.lzu.edu.cn/handle/262010/107411
Collection	化学化工学院
Recommended Citation GB/T 7714	Gong, Chenliang,Zhang, Shujiang. Linear sulfonated polyimides containing polyhedral oligomeric silsesquioxane (POSS) in main chain for proton exchange membranes[J]. Journal of Power Sources,2015,2015(290):42-52.
APA	Gong, Chenliang,&Zhang, Shujiang.(2015).Linear sulfonated polyimides containing polyhedral oligomeric silsesquioxane (POSS) in main chain for proton exchange membranes.Journal of Power Sources,2015(290),42-52.
MLA	Gong, Chenliang,et al."Linear sulfonated polyimides containing polyhedral oligomeric silsesquioxane (POSS) in main chain for proton exchange membranes".Journal of Power Sources 2015.290(2015):42-52.

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