GAS PERMEATION THROUGH GLASSY POLYMER MEMBRANES WITH RELATIVELY LOW GLASS-TRANSITION TEMPERATURE

被引：6

作者：

BAE, SY

CHO, DH

KO, SW

KIM, HT

KUMAZAWA, H

机构：

[1] Department of Chemical Engineering, Hanyang University, Seoul

[2] Department of Chemical Engineering, Kyoto University, Kyoto

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 1993年 / 10卷 / 01期

关键词：

D O I：

10.1007/BF02697376

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

When the glass-transition temperature of the polymer is not so much higher than the experimental temperature, the pressure dependence of the mean permeability coefficient of the polymer membrane to a gas is apt to deviate from the prediction by the conventional dual-mode mobility model, and to obey a similar model with concentration-dependent diffusivities because of the plasticization action of sorbed gas in the polymer membrane. In this work, sorption and permeation for oxygen and carbon dioxide in a membrane of polystyrene whose glass-transition temperature is 95-degrees-C, were measured to discuss the mechanism of gas diffusion in glassy polymer membranes with relatively low glass-transition temperature at 30, 40 and 50-degrees-C respectively.

引用

页码：44 / 48

页数：5