聚酰亚胺基气体分离膜的改性方法及其最新进展  

Advances in modification methods of polyimide membranes for gas separation

作　　者：黄旭[1] 邵路[1] 孟令辉[1] 黄玉东[1] 

机构地区：[1]哈尔滨工业大学应用化学系,哈尔滨150001

出　　处：《膜科学与技术》2009年第1期101-108,共8页Membrane Science and Technology

基　　金：哈尔滨市科技创新人才研究专项基金项目(RC2006LX001009);武汉大学生物医用高分子材料教育部重点实验室开放课题基金项目(20070402)

摘　　要：综述了近年来聚酰亚胺气体分离膜的主要改性方法和最新进展,其中重点介绍了交联和共混改性方法,并对聚酰亚胺气体分离膜材料今后发展方向进行了展望.Polyimide have the good chemical and thermal stability, excellent mechanical properties and higher Fractional Free Volume （FFV）, which results in both high gas permeability and high selectivity. Therefore, polyimide membranes are widely used in gas separation applications. However, the gas transport performance of polyimide membranes needs to be improved for the stricter requirements from industry. Besides, most of the synthesized polyimide for separating gas mixtures containing the condensed gas will face the problem of plasticization which makes their performance decay and hinders their further application. Therefore, in order to use polyimide - based separation membrane economically and effectively, the significant studies have been carried out to enhance their gas transport performance and improve their anti - plasticization properties by physical or chemical modification methods. This paper reviews the latest progress in polyimide modification approaches for gas separation applications, in which cross - linking and blending modification methods are focused. At last, the future directions of polyimide - based gas separation membranes are predicted and suggested.

关 键 词：聚酰亚胺 气体分离 膜 改性 塑化 

分 类 号：TQ028.8[化学工程]