• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >A comparative study of side-chain-type poly(ether ether ketone) anion exchange membrane functionalized with different hetero-cycloaliphatic quaternary ammonium groups
【24h】

A comparative study of side-chain-type poly(ether ether ketone) anion exchange membrane functionalized with different hetero-cycloaliphatic quaternary ammonium groups

机译：用不同杂芳族脂族季铵基团官能化侧链型聚（醚酮）阴离子交换膜的对比研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Anion exchange membranes based on side-chain-type quarternized poly(ether ether ketone)s (QPEEKs), containing different hetero-cycloaliphatic quaternary ammonium groups, were prepared via a multi-step procedure, including polycondensation with a monomer containing pendant methylphenyl groups, bromomethylation, and followed by quaternization with 1-methylpyrrolidine (MPY), 1-methylpiperidine (MPRD), 1-methylimidazole (MIDZ) and N-methyl morpholine (MMPH), respectively. The properties of these membranes were then compared with the properties of conventional quarternized poly(ether ether ketone)s containing benzyltrimethylammonium (QPEEK-TMA). Model compounds, QMPY, QMPRD, QMIDZ and QMMPH, were synthesized and used to quantitatively compare the alkaline stability of hetero-cycloaliphatic quaternary ammonium groups using H-1 NMR. The results of this study indicated that the alkaline stability of all these model compounds is in the order of QMPY > QMPRD > QTMA > QMIDZ > QMMPH. These QPEEKs membranes display superior thermal, dimensional and mechanical stability. QPEEK-TMA, QPEEK-MPY and QPEEK-MPRD exhibit higher hydroxide conductivities and lower activation energies than QPEEK-MIDZ and QPEEK-MMPH. Furthermore, after exposure to 1 M NaOH at 60 degrees C for 24 days, QPEEK-MPY and QPEEK-MPRD demonstrated a loss in hydroxide conductivity of 28.5% and 33.4%, respectively. Both values were lower than that of QPEEK-TMA (37.7%). Therefore, among these side-chain-type QPEEKs membranes, QPEEK-MPY and QPEEK-MPRD, containing benzylmethylpyrrolidinium and benzylmethylpiperidinium as cation head-groups, are promising AEM materials for fuel cell construction.
机译：基于侧链型阴离子交换膜的聚季（醚醚酮）（QPEEKs），含不同的杂脂环族季铵基团，分别通过多步程序制备，包括用含有侧链甲基苯基团的单体缩聚， bromomethylation，并随后通过季铵化用1-甲基吡咯烷（MPY），1-甲基哌啶（MPRD），1-甲基咪唑（MIDZ）和-N甲基吗啉（MMPH），分别。 （醚醚酮），这些膜的性能，然后用常规的季铵化聚的性质相比š含苄基（QPEEK-TMA）。模型化合物，QMPY，QMPRD，QMIDZ和QMMPH，合成和用于定量比较使用H-1 NMR杂脂环族季铵基团的碱稳定性。这项研究的结果表明，所有这些模型化合物的碱稳定性是在QMPY> QMPRD> QTMA> QMIDZ> QMMPH的顺序。这些QPEEKs膜显示优异的热，尺寸和机械稳定性。 QPEEK-TMA，QPEEK-MPY和QPEEK-MPRD表现出较高的氢氧化物的导电性和较低的活化能比QPEEK-MIDZ和QPEEK-MMPH。此外，暴露于1M NaOH中在60℃下24天之后，QPEEK-MPY和QPEEK-MPRD分别展示了28.5％和33.4％，氢氧化导电性的损失。这两个值均高于QPEEK-TMA（37.7％）的低。因此，这些侧链型QPEEKs膜，QPEEK-MPY和QPEEK-MPRD，含有benzylmethylpyrrolidinium和benzylmethylpiperidinium作为阳离子头部基团之间，是有希望的AEM材料用于燃料电池的构造。

著录项

  • 来源
    《RSC Advances》 |2019年第14期|共9页
  • 作者

    Yao Dan; Wei Tonghui; Shang Lichao; Na Hui; Zhao Chengji;

  • 作者单位

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Jilin Peoples R China;

    Jilin Univ Sch Mech &

    Aerosp Engn Changchun 130025 Jilin Peoples R China;

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Jilin Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号