PLASMA DEPOSITION OF VINYL-ACETATE ONTO NYLON-4 MEMBRANE FOR PERVAPORATION AND EVAPORATION SEPARATION OF AQUEOUS ALCOHOL MIXTURES

被引：73

作者：

LEE, KR ^{[1
]}

CHEN, RY ^{[1
]}

LAI, JY ^{[1
]}

机构：

[1] CHUNG YUAN CHRISTIAN UNIV,DEPT CHEM ENGN,CHUNGLI 320,TAIWAN

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 75卷 / 1-2期

关键词：

PERVAPORATION; EVAPOMEATION; PLASMA DEPOSITION; NYLON-4; HYDROLYZED COATING;

D O I：

10.1016/0376-7388(92)80015-C

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pervaporation and evapomeation separations of water-alcohol mixtures through a modified Nylon-4 membrane - coated with plasma deposited, hydrolyzed vinyl acetate (VAc) - (PVA-p-N4), were investigated. The effects of downstream pressure, plasma deposition conditions, feed composition, feed temperature, and size of the alcohols on the performance of the PVA-p-N4 membranes were studied. The separation factor and the permeation rate of this PVA-p-N4 membrane are both higher than those of the unmodified Nylon-4 membrane for pervaporation of aqueous ethanol solutions. A separation factor of 13.5 and a 420 g/m2-hr permeation rate can be obtained. Compared with pervaporation, evapomeation effectively increases the separation factor for the water-alcohol mixtures, while the permeation rate is decreased.

引用

页码：171 / 180

页数：10

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