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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of composite anion exchange membranes based on in-situ copolymerization of N-vinyl formamide and divinylbenzene in porous PTFE
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Preparation of composite anion exchange membranes based on in-situ copolymerization of N-vinyl formamide and divinylbenzene in porous PTFE

机译：基于原位共聚的基于乙烯基甲酰胺和二胆胆苯的基于原位共聚的复合阴离子交换膜的制备

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摘要

A series of composite anion exchange membranes was synthesized via in-situ copolymerization of various ratios N-vinyl formamide (NVF) and divinylbenzene (DVB), supported by porous polytetrafluoroethylene (PTFE) polymer matrix, and followed by alkaline hydrolysis, and quaternization of the composite membranes with epoxypropyltrimethylammonium chloride (EPTMAC). FTIR and SEM analyses revealed that the composite membranes were successfully prepared. Moreover, the hydrophilic property of the composite membrane improved by introduction of the quaternized poly(NVF-co-DVB) copolymer. Water uptake, swelling ratio, and conductivity showed upward trends by increase of NVF amount. The copolymer with 95% of NVF showed the highest elongation at break (102%, room temperature) and conductivity (5.15 x 10(-2) S/cm, 80 degrees C). After immersion of the PNDB95%-N membrane in 5 mol/L NaOH solution for 96 h at room temperature, the conductivity (60 degrees C) of the membrane decreased to 3.99 x 10(-2)S/cm. Moreover, the membrane registered weight loss under 4.5%, caused by degradation of the quaternary ammonium groups in NaOH solution. All in all, in 3 mol/L methanol solutions, the composite membranes showed permeability ranging from 7.6% to 19.7%, if compared to the Nafion (R)-115 membrane, showing good alcohol resistance.
机译：以多孔聚四氟乙烯（PTFE）聚合物为载体，通过不同比例的N-乙烯基甲酰胺（NVF）和二乙烯基苯（DVB）原位共聚，然后碱性水解，再与环氧丙基三甲基氯化铵（EPTMAC）进行季铵化，制备了一系列复合阴离子交换膜。红外光谱和扫描电镜分析表明，该复合膜已成功制备。此外，季铵化聚（NVF-co-DVB）共聚物的引入改善了复合膜的亲水性。随着NVF用量的增加，吸水率、溶胀率和电导率呈上升趋势。含95%NVF的共聚物的断裂伸长率（102%，室温）和电导率（5.15 x 10（-2）S/cm，80摄氏度）最高。在室温下将PNDB95%-N膜浸入5 mol/L NaOH溶液中96 h后，膜的电导率（60℃）降低至3.99 x 10（-2）S/cm。此外，由于NaOH溶液中季铵盐基团的降解，膜的失重率低于4.5%。总之，在3 mol/L甲醇溶液中，与Nafion（R）-115膜相比，复合膜的渗透性在7.6%到19.7%之间，表现出良好的耐酒精性。

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  • 来源
    《Journal of Applied Polymer Science》 |2021年第8期|共11页
  • 作者

    Luo Wanjie; Wang Lulu; Feng Ruijiang; Zhao Chongfeng; Wang Jilin; Cai Tianzhou;

  • 作者单位

    Liaoning Shihua Univ Sch Petr &

    Chem Technol Dept Safety &

    Environm Protect Coll Chem Engn &

    Environm Engn Fushun Peoples R China;

    Liaoning Shihua Univ Sch Petr &

    Chem Technol Dept Safety &

    Environm Protect Coll Chem Engn &

    Environm Engn Fushun Peoples R China;

    Liaoning Shihua Univ Sch Petr &

    Chem Technol Dept Safety &

    Environm Protect Coll Chem Engn &

    Environm Engn Fushun Peoples R China;

    Liaoning Shihua Univ Sch Petr &

    Chem Technol Dept Safety &

    Environm Protect Coll Chem Engn &

    Environm Engn Fushun Peoples R China;

    Liaoning Shihua Univ Sch Petr &

    Chem Technol Dept Safety &

    Environm Protect Coll Chem Engn &

    Environm Engn Fushun Peoples R China;

    PetroChina Sichuan Petrochem Co Ltd Chengdu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    conducting polymers; membranes; polyelectrolytes;

    机译：导电聚合物;膜;聚电解质;

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