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
Indexed BySCIE ; EI
2015-09-20
Source PublicationJournal of Power Sources
Volume2015Issue:290Pages:42-52
PublisherELSEVIER
Publication PlaceAMSTERDAM
AbstractLinear 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.
KeywordMembranes 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
Department兰州大学化学化工学院
Project NumberNational Natural Science Foundation of China [21204033] ; Fundamental Research for Central Universities [lzujbky-2015-25]
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
Funding OrganizationNSFC ; LZU
DOI10.1016/j.jpowsour.2015.04.174
ISSN0378-7753
SubtypeArticle
Language英语
WOS IDWOS:000356550900006
EI ID20151900835008
IRID20151900835008
First Inst
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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