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题名: Morphological investigations of block sulfonated poly(arylene ether ketone) copolymers as potential proton exchange membranes
作者: Zhao, Chengji1;  Lin, Haidan1;  Li, Xianfeng2;  Na, Hui1
关键词: block copolymers ;  proton exchange membranes ;  poly(ether ketone) ;  sulfonated
刊名: POLYMERS FOR ADVANCED TECHNOLOGIES
发表日期: 2011-12-01
DOI: 10.1002/pat.1741
卷: 22, 期:12, 页:2173-2181
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: A series of block sulfonated poly(arylene ether ketone) (SPAEK) copolymers with different block lengths and ionic contents were synthesized by a two-stage process. The morphology of these block SPAEK copolymers was investigated by various methods, such as differential scanning calorimetry (DSC), transmission electron microscope (TEM), and small angle X-ray scattering (SAXS). Dark colored ionic domains of hundreds of nanometers spreading as a cloud-like belt were observed in TEM images. The sizes of the ionic domains as a function of block copolymer composition were determined from SAXS curves. The results for the evolution of ionic domains revealed that the block copolymers exhibited more clearly phase-separated microstructure with increasing ionic contents and hydrophobic sequence lengths. Proton conductivity is closely related to the microstructure, especially the presence of large interconnected ionic domains or ionic channels. Block SPAEK membranes have interconnected ionic clusters to provide continuous hydrophilic channels, resulting in higher proton conductivity. Copyright (C) 2010 John Wiley & Sons, Ltd.
关键词[WOS]: X-RAY-SCATTERING ;  FUEL-CELL APPLICATION ;  PERFLUORINATED IONOMER MEMBRANES ;  MULTIBLOCK COPOLYMERS ;  CONDUCTIVE MEMBRANE ;  PEMS ;  LONOMERS ;  NAFION
语种: 英语
WOS记录号: WOS:000298175400081
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142666
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Jilin Univ, Alan G MacDiarmid Inst, Coll Chem, Changchun 130012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Proton Exchange Membrane Fuel Cell Key Mat & Tech, Dalian 116023, Peoples R China

Recommended Citation:
Zhao, Chengji,Lin, Haidan,Li, Xianfeng,et al. Morphological investigations of block sulfonated poly(arylene ether ketone) copolymers as potential proton exchange membranes[J]. POLYMERS FOR ADVANCED TECHNOLOGIES,2011,22(12):2173-2181.
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