摘要
近年来,以酰亚胺环邻位官能化的聚酰亚胺或聚酰胺为前驱体,经一定热处理发生结构重排,可得到另一种刚性结构聚合物——热致重排聚合物。热致重排聚合物作为一种新型的刚性微孔聚合物材料,具有较高的自由体积和比表面积,表现出非常优异的气体渗透性和分离性,因此在气体分离等领域受到了广泛关注。前驱体聚合物的化学结构、制备方法、物理性状和热处理条件(氛围、时间、温度)等都将影响热致重排反应及最终热致重排聚合物的各项性能。因此,本文介绍了热致重排聚合物的重排反应机理、研究进展及改性研究情况,并对热致重排聚合物今后的发展趋势进行了展望。
Recently,the rigid polymer membranes derived from functionalized polyimides or polyamides by apost-thermal conversion process have been developed,so-called thermally rearranged polymers.Thermally rearranged polymers are a new class of rigid and microporous polymers with high free volume fractions and large surface areas.Thermally rearranged polymers have received much attention in gas separation applications due to their high gas permeability and selectivity.Thermally rearranged reaction and the final properties of thermally rearranged polymers can be affected by chemical structure of precursors,preparation method,physical form,thermal conversion conditions including atmosphere,temperature and time.In this paper,the mechanism of thermal rearrangement,research progress in the field of gas separation as well as their modification of thermally rearranged polymers are introduced.The future application and development trend of thermally rearranged polymers are also prospected.
作者
郝继璨
鲁云华
肖国勇
李琳
胡知之
王同华
HAO Jican;LU Yunhua;XIAO Guoyong;LI Lin;HU Zhizhi;WANG Tonghua(School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051;School of Chemical Engineering, Dalian University of Technology, Dalian 116024)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第A02期151-155,162,共6页
Materials Reports
基金
国家自然科学基金(1406102
21878033
21676044)
中国博士后基金(2014M560212)
辽宁省教育厅优秀人才项目(LJQ2015053)
关键词
热致重排聚合物
气体分离
聚酰亚胺
刚性微孔膜材料
thermally rearranged polymers
gas separation
polyimides
rigid micropore membrane