应用化学2017，Vol.34Issue(11)：1265-1272,8.DOI:10.11944/j.issn.1000-0518.2017.11.170042
聚萘酰亚胺膜的制备及其气体分离性能
Synthesis,Characterization and Gas Transport Properties of Polynaphthalimides Membranes
摘要
Abstract
A series of novel polynaphthalimides(PNIs)was synthesized from 1,4,5,8-naphthalenetracarboxylic dianhydride and several diamines containing alkyl substituents in the o-position. Almost all the PNIs with alkyl substituents in the o-position are readily soluble in polar solvents and can be solution-cast to transparent and tough films. The films have tensile strengths,elongations at break,and tensile module in the range of 54~77 MPa,6. 4% ~8. 1%,and 1. 3~2. 2 GPa,respectively. The PNIs exhibit excellent thermal stabilities with the onset decomposition temperature ranging from 448 to 501 ℃. The glass transition temperatures of the PNIs are in the range of 382 to 391℃. The CO2 permeability coefficients and permeability selectivities of CO2 to CH4 of the PNIs are in the range of 37. 2~151 barrer and 20. 9~31. 7,respectively,making these novel polynaphthalimides potentially useful candidate materials for membranes in natural gas purification.关键词
萘二酐/聚萘酰亚胺/气体分离/膜材料Key words
naphthalene dianhydride/polynaphthalimides/gas separation/membrane material分类
化学化工引用本文复制引用
毕伟辉,毛鸿超,张所波..聚萘酰亚胺膜的制备及其气体分离性能[J].应用化学,2017,34(11):1265-1272,8.基金项目
国家自然科学基金项目资助(51473163,51503199) Supported by the National Natural Science Foundation of China(No. 51473163,No. 51503199) （51473163,51503199）
