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首页> 外文期刊>RSC Advances >Alkyl bisimidazolium-mediated crosslinked comb-shaped polymers as highly conductive and stable anion exchange membranes
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Alkyl bisimidazolium-mediated crosslinked comb-shaped polymers as highly conductive and stable anion exchange membranes

机译：烷基双咪唑鎓介导的交联梳状聚合物，作为高导电性和稳定的阴离子交换膜

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摘要

Crosslinked poly(arylene ether sulfone)s (PES) with pendant alkyl bisimidazolium units, which act as both crosslinkage sites and hydroxide conductors, were developed as anion exchange membranes (AEMs). These bisimidazolium-mediated crosslinked membranes (BI-cPESs) display a high hydroxide conductivity exceeding 0.012 S cm(-1) at 20 degrees C and 0.061 S cm(-1) at 80 degrees C, together with good chemical, thermal, mechanical, oxidative and dimensional stabilities. The BI-cPES membrane, which includes a long alkyl chain (C-10, BI-cPES-10), form self-aggregated structures due to the long pendant hydrophobic side chain that forms a comb shape. The benefit of this crosslinked comb-shaped system is its high conductivity of 0.027 S cm(-1) at 20 degrees C, even at an IEC as low as 1.13 meq. g(-1) and a low water uptake of 8.70%.
机译：具有阴离子烷基双亚咪唑鎓单元的交联聚（亚芳基醚砜）（PES）作为阴离子交换膜（AEM），可同时充当交联位点和氢氧化物导体。这些双咪唑鎓介导的交联膜（BI-cPESs）显示出高的氢氧化物电导率，在20摄氏度时超过0.012 S cm（-1），在80摄氏度时超过0.061 S cm（-1），同时具有良好的化学，热，机械，氧化和尺寸稳定性。包括长烷基链（C-10，BI-cPES-10）的BI-cPES膜由于形成了梳状的疏水性长侧链而形成了自聚集结构。这种交联的梳状系统的好处是，即使在IEC低至1.13 meq的情况下，在20摄氏度时其导电率也高达0.027 S cm（-1）。 g（-1）和8.70％的低吸水率。

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