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高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (4): 811-815.doi: 10.1007/s40242-013-2467-2

• Articles • 上一篇    下一篇

Preparation of Anion Exchange Membrane Based on Imidazolium Functionalized Poly(arylene ether ketone)

ZHOU Hao, ZHANG Na, MA Wen-jia, ZHAO Cheng-ji, NA Hui   

  1. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • 收稿日期:2012-12-04 修回日期:2013-03-14 出版日期:2013-08-01 发布日期:2013-07-15
  • 通讯作者: ZHAO Cheng-ji E-mail:zhaochengji@jlu.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.21104022) and the Special Fund for Basic Scientific Research of Central Colleges, Jilin University, China(No.450060491017).

Preparation of Anion Exchange Membrane Based on Imidazolium Functionalized Poly(arylene ether ketone)

ZHOU Hao, ZHANG Na, MA Wen-jia, ZHAO Cheng-ji, NA Hui   

  1. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2012-12-04 Revised:2013-03-14 Online:2013-08-01 Published:2013-07-15
  • Contact: ZHAO Cheng-ji E-mail:zhaochengji@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21104022) and the Special Fund for Basic Scientific Research of Central Colleges, Jilin University, China(No.450060491017).

被引次数

1

摘要：

The authors presented a novel synthetic route for the imidazolium functionalized poly(arylene ether ketone)s, derived from an engineering plastics polymer, a poly(arylene ether ketone) with 3,3',5,5'-tetramethyl-4,4'-dihydroxybiphenyl moiety(PAEK-TM). The preparation of anion exchange membranes comprised converting benzylic methyl groups to bromomethyl groups by a radical reaction, followed by the functionalization of bromomethylated PAEK with alkyl imidazoles, i.e., methyl, butyl or vinyl imidazole. The structure of imidazolium functionalized PAEK was proved by 1H NMR spectra. A class of flexible and tough membranes was then achieved by subsequent film-forming and anion exchange processes. The water uptake and hydroxide conductivities of membranes are comparable or superior to those of quaternary ammonium(QA) anion exchange membranes. This work demonstrated a new route for non-QA anion exchange membrane design, avoiding the chloromethylation reagent and precisely controlling the degree and location of imidazolium groups.

关键词: Anion exchange membrane, Poly(arylene ether ketone), Hydroxide conductivity, Imidazolium

Abstract:

The authors presented a novel synthetic route for the imidazolium functionalized poly(arylene ether ketone)s, derived from an engineering plastics polymer, a poly(arylene ether ketone) with 3,3',5,5'-tetramethyl-4,4'-dihydroxybiphenyl moiety(PAEK-TM). The preparation of anion exchange membranes comprised converting benzylic methyl groups to bromomethyl groups by a radical reaction, followed by the functionalization of bromomethylated PAEK with alkyl imidazoles, i.e., methyl, butyl or vinyl imidazole. The structure of imidazolium functionalized PAEK was proved by 1H NMR spectra. A class of flexible and tough membranes was then achieved by subsequent film-forming and anion exchange processes. The water uptake and hydroxide conductivities of membranes are comparable or superior to those of quaternary ammonium(QA) anion exchange membranes. This work demonstrated a new route for non-QA anion exchange membrane design, avoiding the chloromethylation reagent and precisely controlling the degree and location of imidazolium groups.

Key words: Anion exchange membrane, Poly(arylene ether ketone), Hydroxide conductivity, Imidazolium