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Novel Sulfonated Polyimide Ionomers by Incorporating Pyridine Functional Group in the Polymer Backbone
Lei, Rui1,2; Kang, Chuanqing1,2; Huang, Yunjie1,2; Li, Yuhan1,2; Wang, Xi1,2; Jin, Rizhe1; Qiu, Xuepeng1; Ji, Xiangling1; Xing, Wei1; Gao, Lianxun1
2009-12-05
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume114Issue:5Pages:3190-3197
AbstractA 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
KeywordSulfonated Polyimide Pyridine Acid-base Interaction Water Stability Proton Conductivity
DOI10.1002/app.30929
Indexed BySCI
Language英语
WOS IDWOS:000270497200076
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67770
Collection中国科学院化学研究所
Corresponding AuthorGao, Lianxun
Affiliation1.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
Recommended Citation
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.
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