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Direct synthesis of sulfonated aromatic poly(ether ether ketone) proton exchange membranes for fuel cell applications

✍ Scribed by Maria Gil; Xiangling Ji; Xianfeng Li; Hui Na; J. Eric Hampsey; Yunfeng Lu

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 228 KB
Volume: 234
Category: Article
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2003.12.021

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## Abstract A series of sulfonated poly(ether sulfone ether ketone ketone) (SPESEKK) with different degree of sulfonation (DS) are prepared by the postsulfonation of PESEKK using chlorosulfonic acid as sulfonating agent and concentrated sulfuric acid as solvent. The chemical structures of the polym