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Ion transport in polymerized lyotropic liquid crystals containing ionic liquid
Journal of Polymer Science ( IF 3.4 ) Pub Date : 2021-09-10 , DOI: 10.1002/pol.20210440
Alireza Bandegi 1 , Kyungtae Kim 2 , Reza Foudazi 1, 3
Affiliation  

In this work, we investigate the effect of morphology and segmental dynamics on ion transport in polymerized lyotropic liquid crystals (polyLLCs) containing 1-butyl-3-methylimidazolium tetrafluoroborate as ionic liquid (IL). We demonstrate that two important factors, which affect ion conduction in polyLLCs, are grain size and chain density at the interface. The polyLLC with large grain size (70 nm) shows significant reduction in ion conductivity (one order of magnitude) compared to its homopolymer/IL mixture. However, the polyLLC with small grain size (20 nm) has little difference in ion conductivity compared to its homopolymer/IL mixture. It is observed that decreasing the chain density enhances the interaction of IL with polymer chains and consequently slows the relaxation of polymer chains. In addition, comparing the dynamics of polymer chains in mixtures of homopolymer/IL and templated LLC mesophases shows that the confinement in LLC structure prolongs the relaxation of polymer chains.

中文翻译:

含有离子液体的聚合溶致液晶中的离子传输

在这项工作中,我们研究了形态和分段动力学对含有 1-丁基-3-甲基咪唑鎓四氟硼酸盐作为离子液体 (IL) 的聚合溶致液晶 (polyLLC) 中离子传输的影响。我们证明了影响 polyLLC 中离子传导的两个重要因素是界面处的晶粒尺寸和链密度。与均聚物/IL 混合物相比,具有大晶粒尺寸 (70 nm) 的 polyLLC 显示出离子电导率显着降低(一个数量级)。然而,与均聚物/IL 混合物相比,具有小晶粒尺寸 (20 nm) 的 polyLLC 在离子电导率方面几乎没有差异。据观察,降低链密度会增强 IL 与聚合物链的相互作用,从而减缓聚合物链的松弛。此外,
更新日期:2021-10-15
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