Naphthalene-based poly(arylene ether ketone) copolymers containing sulfobutyl pendant groups for proton exchange membranes (pages 5772–5783)
Ke Shao, Jing Zhu, Chengji Zhao, Xianfeng Li, Zhiming Cui, Yang Zhang, Hongtao Li, Dan Xu, Gang Zhang, Tiezhu Fu, Jing Wu, Hui Na and Wei Xing
Version of Record online: 8 SEP 2009 | DOI: 10.1002/pola.23621
A new monomer 1,5-bis(4-fluorobenzoyl)-2,6-dimethoxylnaphthalene (DMNF) was prepared and further polymerized to form naphthalene-based poly(arylene ether ketone) copolymers containing methoxy groups (MNPAEKs). The side-chain-type sulfonated naphthalene-based poly(arylene ether ketone) copolymers (SNPAEKs) were obtained by demethylation and sulfobutylation. The IEC (0.99–1.82 mequiv/g) of the SNPAEKs can be readily controlled and the SNPAEK-xx membranes exhibited low methanol permeability, lower water swelling, and high proton conductivity and could be the promising materials as alternative to Nafion membrane for DMFC applications.