几种聚醚酰亚胺的气体透过性能

Investigation of Gas Permeability Property of Six Polyetherimide Membranes

摘要: 本文研究了一系列芳环聚醚酰亚胺(PEI)对H_2、CO_2、O_2和N_2的透过性能与分子结构之间的关系。单醚酐型聚醚酰亚胺具有较高的透氢系数和H_2/N_2分离系数。由半刚性的4,4′-二氨基二苯酮(DABP)与柔性的三苯二醚四酸二酐(HQDPA)、二苯醚四酸二酐(ODPA)缩聚得到的聚醚酰亚胺具有很高的H_2/N_2、CO_2/N_2和O_2/N_2分离系数。

Abstract: Gas permeabilities and selectivies for gas pairs H_2/N_2 CO_2/N_2 andO_2/N_2 through a series of aromatic polyetherimids, which were prepared from twodifferent dianhydrides and three distinct diamines, have been investigated. Systematicvariations in chemi