Effect of PEG additive on membrane formation by phase inversion

被引：528

作者：

Kim, JH ^{[1
]}

Lee, KH ^{[1
]}

机构：

[1] Korea Res Inst Chem Technol, Membranes & Separat Res Ctr, Taejon 305606, South Korea

来源：

JOURNAL OF MEMBRANE SCIENCE | 1998年 / 138卷 / 02期

关键词：

phase inversion; polysulfone; thermodynamics; kinetics; coagulation value; light transmittance; viscosity; macrovoids; PEG additive effect;

D O I：

10.1016/S0376-7388(97)00224-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study investigates the effect of PEG additive as a pore-former on the structure formation of membranes and their permeation properties connected with the changes of thermodynamic and kinetic properties in phase inversion process. The membranes were prepared by using polysulfone (PSf)/N-methyl-2-pyrrolidone (NMP)/poly(ethylene glycol) (PEG) casting solution and water coagulant. The resulting membranes prepared by changing the molecular weight of PEG additive and the ratio of PEG to NMP were characterized by scanning electron microscope observations, measurements of water flux and PEG rejection. The thermodynamic and kinetic properties of membrane-forming system were studied through coagulation value, light transmittance and viscosity. The correlations between the final membrane structure/permeation properties and thermodynamic/kinetic properties of membrane forming system are discussed extensively. (C) 1998 Elsevier Science B.V.

引用

页码：153 / 163

页数：11

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