Novel iodo-containing poly(arylene ether ketone)s as intermediates for grafting perfluoroalkyl sulfonic acid groups

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• 作者：Siyuan Liu^a ; Wu Luo^b ; Hanyu Zhang^a ; Xiaobai Li^a ; Wei Hu^c ; Michael D. Guiver^d ; ^e ; Baijun Liu^a ; ^{liubj@jlu.edu.cn}
• 关键词：Poly(arylene ether ketone)s ; Proton exchange membrane ; Ullman coupling ; Functional polymers
• 刊名：Reactive and Functional Polymers
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：111
• 期：Complete
• 页码：7-13
• 全文大小：816 K
• 卷排序：111

文摘

A synthetic approach to poly(arylene ether ketones) grafted with super-acidic perfluoroalkyl-sulfonic-acids is reported. A series of iodo-containing poly(arylene ether ketone)s derived from a 4-iodophenylated hydroquinone monomer were synthesized by aromatic nucleophilic substitution (SNAr). The iodo-containing polymers were functionalized via the Ullmann reaction to give poly(arylene ether ketone)s grafted with perfluoroalkyl-sulfonic-acid. The perfluoroalkyl-sulfonic-acid functionalized aromatic polymers were investigated as proton exchange membranes (PEM). The membranes had good overall properties of thermal-oxidative stability, mechanical strength, methanol permeability and proton conductivity. A membrane with IEC ~ 1.37 meq g− 1 had a proton conductivity of 0.088 S cm− 1 at 100 °C, which was higher than many sulfonated hydrocarbon PEMs with similar IEC values.