FORMATION OF ASYMMETRIC POLYSULFONE MEMBRANES BY IMMERSION PRECIPITATION .1. MODELING MASS-TRANSPORT DURING GELATION

被引：136

作者：

RADOVANOVIC, P ^{[1
]}

THIEL, SW ^{[1
]}

HWANG, ST ^{[1
]}

机构：

[1] UNIV CINCINNATI,DEPT CHEM ENGN,ML-171,CINCINNATI,OH 45221

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 65卷 / 03期

关键词：

DIFFUSION; MEMBRANE PREPARATION AND STRUCTURE; MICROPOROUS AND POROUS MEMBRANES; PHASE SEPARATION; MODEL;

D O I：

10.1016/0376-7388(92)87024-R

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A model describing the formation of asymmetric membranes by immersion precipitation is presented. The model is used to predict the type of liquid-liquid phase separation (instantaneous or delayed) that occurs when polysulfone-N,N-dimethylacetamide-2-propanol casting solutions are immersed in a gelation bath. The model includes the thermodynamic interaction parameters determined in earlier work and the transport parameters determined by measuring solvent release and nonsolvent uptake of the cast film immersed into a gelation bath for different initial compositions of the cast film and gelation bath. The predictions of the model agree with the experimental observations.

引用

页码：213 / 229

页数：17

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