THE PERMEABILITY BEHAVIOR OF POLYVINYLPYRROLIDONE-MODIFIED POROUS SILICA MEMBRANES

被引：33

作者：

CASTRO, RP ^{[1
]}

COHEN, Y ^{[1
]}

MONBOUQUETTE, HG ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,DEPT CHEM ENGN,LOS ANGELES,CA 90024

来源：

JOURNAL OF MEMBRANE SCIENCE | 1993年 / 84卷 / 1-2期

关键词：

CERAMIC MEMBRANES; COMPOSITE MEMBRANES; SURFACE MODIFICATION; GRAFT POLYMERIZATION; LIQUID PERMEABILITY AND SEPARATIONS; POLYVINYLPYRROLIDONE; SILICA MEMBRANES;

D O I：

10.1016/0376-7388(93)85057-4

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The surface of 4100 Angstrom-pore-size silica membranes was modified with a covalently bonded polyvinylpyrrolidone brush layer by a novel graft polymerization process. Hydraulic permeability measurements performed with six different solvents and both unmodified and modified membranes suggest that the permeability of the modified membrane is determined by the configuration of the terminally anchored polymer chains. In the modified ceramic-supported polymeric (CSP) membrane, the swelling of the polymer brush layer increases as the solvent power increases, resulting in a decrease in the pore radius and subsequently, the permeability.

引用

页码：151 / 160

页数：10

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