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The effect of dope solution characteristics on the membrane morphology and gas transport properties: 2. PES/γ-BL system

机译:涂料溶液特性对膜形态和气体传输性能的影响:2. PES /γ-BL系统

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摘要

Macrovoid-free, sponge-like membranes with improved gas permeance were obtained from a heterogeneity-developed polyethersulfone (PES)/γ-butyrolactone (γ-BL) dope solution. The heterogeneity of the dope solution was developed with aging time and such a heterogeneity-developed cast solution film was immersed in a nonsolvent so that it would be coagulated. In this novel procedure, the heterogeneity developed was maintained until the moment of immersion in a coagulation medium.
机译:从不均匀性开发的聚醚砜(PES)/γ-丁内酯(γ-BL)涂料溶液中获得了无气孔,具有改善的透气性的海绵状膜。涂料溶液的异质性随老化时间而发展,并将这种异质性发展的流延溶液膜浸没在非溶剂中以使其凝结。在这种新颖的方法中,所形成的异质性一直保持到浸入凝固介质中为止。

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