Composite membrane compositions are formed from about 99 to 30 parts by weight of a matrix polymeric chain selected from the group consisting of polyarylenes, substituted polyarylenes, polyesters, polypropylene, polystyrenes, polyvinyl halides and nitrogen containing polymers and, from about 1 to 70 parts by weight of a liquid crystal selected from the group consisting of smectic and cholesteric classes. The composite membrane compositions are novel and have utility as a semipermeable membrane for the separation of gases.
复合膜组合物由约 99 至 30 份(按重量计)的基质聚合物链和约 1 至 70 份(按重量计)的液晶组成,前者选自聚芳烯、取代聚芳烯、聚酯、聚
丙烯、聚
苯乙烯、聚
乙烯卤化物和含氮聚合物组成的组,后者选自胶粘和胆甾类组成的组。这种复合膜组合物很新颖,可用作分离气体的半透膜。