聚砜
三元运算
曲折
材料科学
膜
相(物质)
化学工程
聚合物
凝结
多孔性
铸造
高分子化学
复合材料
化学
有机化学
心理学
生物化学
精神科
计算机科学
工程类
程序设计语言
作者
Xintao Deng,Fuyuan Yang,Jugang Ma,Yangyang Li,Jian Dang,Minggao Ouyang
标识
DOI:10.1016/j.seppur.2023.125307
摘要
A ternary phase field model is developed for water/N-methyl-2-pyrrolidone(NMP)/polysulfone system to simulate the non-solvent induced phase separation process. Our model succeeds to predict detailed asymmetric membrane structures, with dense skin layer and porous sublayer constructed from polymer network. It is found that the pore distribution and connectivity of polymer network change with the initial composition of casting solution and coagulation bath. Tortuosity and maximum pore size along the direction of thickness are calculated, with a typical trade-off relation found between them. Electrochemical separation performance was evaluated and found to have a notable correlation with structural characteristics.
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