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从分子设计出发，合成了自由体积大、玻璃化温度高和优异综合性能的多取代联苯型聚芳醚酮。对其均质膜的气体渗透性进行了测试，并考察了共聚物组成对膜性能的影响。其中两种共聚物的渗透性为ＣＯＰＰＥＫＡＤ（１∶３）：ＰＣＯ２＝４．４９ｂａｒｅｒ，αＣＯ２／Ｎ２＝４１．９６，ＰＯ２＝０．７５ｂａｒｅｒ，αＯ２／Ｎ２＝７．１０；ＣＯＰＰＥＫＡＣ（１∶１）：ＰＣＯ２＝９．１９ｂａｒｅｒ，αＣＯ２／Ｎ２＝３４．１６，ＰＯ２＝１．５０ｂａｒｒｅｒ，αＯ２／Ｎ２＝５．５７。此类聚合物的渗透活化能较小，对温度的依赖性小，表明这种聚合物是高渗透性和高选择性的耐高温气体膜分离材料。
Based on the molecular design, poly-substituted biphenyl poly (aryl ether ketone) with large free volume, high glass transition temperature and excellent synthetic properties was synthesized. The gas permeability of its homogeneous membrane was tested and the influence of copolymer composition on membrane performance was investigated. The permeability of the two copolymers was COPPEKAD (1: 3): PCO2 = 4.49barer, αCO2 / N2 = 41.96, PO2 = 0.75barer, αO2 / N2 = : PCO2 = 9.19barer, αCO2 / N2 = 34.16, PO2 = 1.50barrer, αO2 / N2 = 5.57. These polymers have lower penetration activation energy and less temperature dependency, indicating that this polymer is a high permeability and high selectivity gas barrier membrane material.