Recent progress in microporous polymers from thermally rearranged polymers and polymers of intrinsic microporosity for membrane gas separation: Pushing performance limits and revisiting trade‐off lines,Journal of Polymer Science

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Recent progress in microporous polymers from thermally rearranged polymers and polymers of intrinsic microporosity for membrane gas separation: Pushing performance limits and revisiting trade‐off lines
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-05-26 , DOI: 10.1002/pol.20200110
Won Hee Lee ₁ , Jong Geun Seong _{1,

2} , Xiaofan Hu ₁ , Young Moo Lee ₁

Affiliation

Polymers are promising materials for gas separation membranes. However, the trade‐off relationship between gas permeability and selectivity remains an obstacle for achieving polymer membranes that exhibit high gas permeation with desirable separation efficiency. Improving polymer microporosity is of interest in gas separation membranes to enhance gas transport behavior. Polymer modifications by (a) incorporating intrinsically microporous units and/or (b) increasing chain rigidity can enhance microporosity in conventional polymer membrane materials such as polyimides. These strategies are adopted for new classes of microporous polymers, thermally rearranged (TR) polymers, and polymers with intrinsic microporosity (PIMs), to maximize gas transport properties. Their outstanding gas separation performances have redefined the traditional trade‐off lines. This review aims to explore the advances in microporous polymers for gas separation applications. The approaches on TR polymers and PIMs to enhance their microporosity are listed, and their developments are evaluated in the context of revisiting performance limits for industrially relevant gas separation applications.

中文翻译：

从热重排聚合物和固有微孔性聚合物用于膜气体分离的微孔聚合物的最新进展：突破性能极限并重新考虑折衷方案

聚合物是用于气体分离膜的有前途的材料。但是，气体渗透率和选择性之间的权衡关系仍然是获得具有高气体渗透性和理想分离效率的聚合物膜的障碍。在气体分离膜中提高聚合物的微孔率是令人感兴趣的，以增强气体的传输性能。通过（a）掺入固有的微孔单元和/或（b）增加链刚性来进行聚合物改性可以增强常规聚合物膜材料如聚酰亚胺中的微孔率。这些策略被用于新型微孔聚合物，热重排（TR）聚合物和具有固有微孔性（PIM）的聚合物，以最大限度地提高气体传输性能。他们出色的气体分离性能重新定义了传统的权衡线。这篇综述旨在探索用于气体分离应用的微孔聚合物的进展。列出了TR聚合物和PIM增强其微孔性的方法，并在重新考虑工业相关气体分离应用的性能极限的背景下评估了它们的发展。

更新日期：2020-05-26

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