一种用于CO分离的新型聚合物膜——（PIM-聚酰亚胺）-（6FDA-均四甲苯-聚酰亚胺）共聚物的简便合成方法

A Facile Synthesis of (PIM-Polyimide)-(6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO Separation.

作者信息

Hossain Iqubal, Al Munsur Abu Zafar, Kim Tae-Hyun

机构信息

Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Korea.

Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea.

出版信息

Membranes (Basel). 2019 Aug 31;9(9):113. doi: 10.3390/membranes9090113.

Random copolymers made of both (PIM-polyimide) and (6FDA-durene-PI) were prepared for the first time by a facile one-step polycondensation reaction. By combining the highly porous and contorted structure of PIM (polymers with intrinsic microporosity) and high thermomechanical properties of PI (polyimide), the membranes obtained from these random copolymers [(PIM-PI)-(6FDA-durene-PI)] showed high CO permeability (>1047 Barrer) with moderate CO/N (> 16.5) and CO/CH (> 18) selectivity, together with excellent thermal and mechanical properties. The membranes prepared from three different compositions of two comonomers (1:4, 1:6 and 1:10 of x:y), all showed similar morphological and physical properties, and gas separating performance, indicating ease of synthesis and practicability for production in large scale. The gas separation performance of these membranes at various pressure ranges (100-1500 torr) was also investigated.

首次通过简便的一步缩聚反应制备了由（PIM-聚酰亚胺）和（6FDA-均苯四甲酸二酐-聚酰亚胺）组成的无规共聚物。通过结合PIM（固有微孔聚合物）的高度多孔且扭曲的结构以及PI（聚酰亚胺）的高热机械性能，由这些无规共聚物[(PIM-PI)-(6FDA-均苯四甲酸二酐-聚酰亚胺)]制得的膜表现出高的CO渗透性（>1047巴耳），同时具有适度的CO/N（>16.5）和CO/CH（>18）选择性，以及优异的热性能和机械性能。由两种共聚单体的三种不同组成（x:y为1:4、1:6和1:10）制备的膜均表现出相似的形态和物理性能以及气体分离性能，表明合成简便且具有大规模生产的实用性。还研究了这些膜在各种压力范围（100 - 1500托）下的气体分离性能。