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首页> 外文期刊>RSC Advances >Electrospun nanofiber enhanced imidazolium-functionalized polysulfone composite anion exchange membranes
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Electrospun nanofiber enhanced imidazolium-functionalized polysulfone composite anion exchange membranes

机译：Electrom an纳米纤维增强咪唑型官能化聚砜复合阴离子交换膜

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摘要

A novel method of improving interfacial compatibility in electrospun anion exchange membranes (AEMs) is developed by using imidazolium-functionalized polysulfone (IMPSF) as both electrospun fiber mats and interfiber voids filler. Scanning electron microscopy (SEM) illustrates the defect-free and fiber-retained morphology of the IMPSF electrospun AEMs. Transmission electron microscopy (TEM) shows better aggregation of ion clusters in the IMPSF electrospun AEMs. As a result, the electrospun AEMs prepared in the present work exhibit much higher hydroxide conductivity increment than most reported electrospun AEMs (around 1.7 folds in 20 degrees C water and 100 folds at 60 degrees C, relative humidity (RH) 40% as compared with the corresponding cast AEMs). Excellent interfacial compatibility and microphase separation morphology also promote swelling resistance and mechanical and alkaline stabilities of the IMPSF electrospun composite AEMs. Compared with the cast AEMs, tensile strength increment is up to 22%, alkaline stability increases more than one fold after immersing in 1 M KOH at 60 degrees C for 24 h. Results in the present work are helpful to componential design of the electrospun AEMs.
机译：通过使用咪唑官能化的聚砜（IMPSF）作为电纺纤维垫和紫外空隙填料，开发了一种提高电纺阴离子交换膜（AEM）中的界面相容性的新方法。扫描电子显微镜（SEM）说明了IMPSF ElectromeS AEM的无缺陷和纤维保留的形态。透射电子显微镜（TEM）显示了IMPSF Electrom OEM中的离子簇的更好聚集。结果，在本作工作中制备的电纺AEM具有比大多数报道的电纺AEM更高的氢氧化物电导率增量（在20摄氏度中的约1.7倍，并且在60℃下折叠100倍，相对湿度（RH）40％相比相应的铸造艾美。优异的界面兼容性和微相分离形态也促进了IMPSF Electrom OEL的溶胀性和机械和碱性稳定性。与铸造AEMS相比，拉伸强度增量高达22％，碱性稳定性在60℃下浸入1M KOH后增加了多于一个折叠。目前的工作有助于电纺AEMS的成分设计。

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  • 来源
    《RSC Advances》 |2015年第115期|共8页
  • 作者

    Gong Xue; He Gaohong; Yan Xiaoming; Wu Yao; Chen Wanting; Wu Xuemei;

  • 作者单位

    Dalian Univ Technol Res &

    Dev Ctr Membrane Sci &

    Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Res &

    Dev Ctr Membrane Sci &

    Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Sch Petr &

    Chem Engn Panjin 124221 Peoples R China;

    Dalian Univ Technol Res &

    Dev Ctr Membrane Sci &

    Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Res &

    Dev Ctr Membrane Sci &

    Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Res &

    Dev Ctr Membrane Sci &

    Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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