Synthesis of crosslinked PEG/IL blend membrane via one-pot thiol-ene/epoxy chemistry,Journal of Polymer Science

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Synthesis of crosslinked PEG/IL blend membrane via one-pot thiol-ene/epoxy chemistry
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-01-10 , DOI: 10.1002/pol.20190195
Jing Deng ₁ , Zhongde Dai ₁ , Liyuan Deng ₁

Affiliation

Poly(ethylene glycol) (PEG)-based membranes have obtained considerable attentions for CO2 separation for their promising CO2 separation performance and excellent thermal/ chemical resistance. In this work, a one-pot thiol–ene/epoxy reaction was used to prepare crosslinked PEG-based and PEG/ionic liquids (ILs) blend membranes. Four ILs of the same cation [Bmim] with different anions ([BF4] , [PF6] , [NTf2] , and [TCM]) were chosen as the additives. The chemical structure, thermal properties, hydrophilicity, and permeation performance of the resultant membranes were investigated to study the ILs’ effects. An increment in CO2 permeability (~34%) was obtained by optimizing monomer ratios and thus crosslinking network structures. Adding ILs into optimized PEG matrix shows distinct influences in CO2 separation performance depending on the anions’ types, due to the different CO2 affinities and compatibilities with PEG matrix. Among these ILs, [Bmim][NTf2] was found the most effective in enhancing CO2 transport by simultaneously increasing the solubility and diffusivity of CO2. © 2020 The Authors. Journal of Polymer Science published by Wiley Periodicals, Inc. J. Polym. Sci. 2020

中文翻译：

通过一锅硫醇-烯/环氧树脂化学合成交联的 PEG/IL 混合膜

基于聚（乙二醇）（PEG）的膜因其具有良好的 CO2 分离性能和优异的耐热/耐化学性而在 CO2 分离领域受到广泛关注。在这项工作中，使用一锅硫醇-烯/环氧树脂反应制备交联的 PEG 基和 PEG/离子液体 (IL) 混合膜。选择具有不同阴离子（[BF4]、[PF6]、[NTf2]和[TCM]）的相同阳离子[Bmim]的四种离子液体作为添加剂。研究了所得膜的化学结构、热性能、亲水性和渗透性能，以研究离子液体的影响。通过优化单体比例并因此交联网络结构，获得了 CO2 渗透率的增加（~34%）。将离子液体添加到优化的 PEG 基质中显示出对 CO2 分离性能的不同影响，具体取决于阴离子的类型，由于不同的 CO2 亲和力和与 PEG 基质的相容性。在这些 ILs 中，[Bmim][NTf2] 被发现通过同时增加 CO2 的溶解度和扩散率来增强 CO2 传输最有效。© 2020 作者。由 Wiley Periodicals, Inc. 出版的 Journal of Polymer Science。J. Polym。科学。2020年

更新日期：2020-01-10

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