Formation and gas flux of asymmetric PMMA membranes

被引：55

作者：

Cheng, JM ^{[1
]}

Wang, DM ^{[1
]}

Lin, FC ^{[1
]}

Lai, JY ^{[1
]}

机构：

[1] CHUNG YUAN CHRISTIAN UNIV,DEPT CHEM ENGN,CHUNGLI 32023,TAIWAN

来源：

JOURNAL OF MEMBRANE SCIENCE | 1996年 / 109卷 / 01期

关键词：

asymmetric membrane formation; PMMA; wet phase inversion; morphology; gas flux;

D O I：

10.1016/0376-7388(95)00187-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the present work, PMMA membranes were prepared by wet phase immersion methods to improve their gas fluxes. It is found that different membrane structure can be obtained by using different nonsolvent-solvent pairs. To completely describe the membrane formation process, the nonsolvent-solvent miscibility and the interfacial polymer concentration in casting solution should be considered accompanied by the ternary phase diagram. A simplified solution-diffusion model was developed to estimate the interfacial polymer concentration. In addition, the effects of adding solvent into the coagulation bath and adding nonsolvent into the casting solution are discussed.

引用

页码：93 / 107

页数：15

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