MICROPOROUS MEMBRANE FORMATION VIA THERMALLY-INDUCED PHASE-SEPARATION .4. EFFECT OF ISOTACTIC POLYPROPYLENE CRYSTALLIZATION KINETICS ON MEMBRANE-STRUCTURE

被引：125

作者：

LIM, GBA

KIM, SS

YE, QH

WANG, YF

LLOYD, DR

机构：

[1] Department of Chemical Engineering, Separations Research Program, Center for Polymer Research, Austin

来源：

JOURNAL OF MEMBRANE SCIENCE | 1991年 / 64卷 / 1-2期

关键词：

MEMBRANE PREPARATION AND STRUCTURE; PHASE SEPARATION; THERMALLY-INDUCED; MICROPOROUS MEMBRANES;

D O I：

10.1016/0376-7388(91)80075-H

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Non-nucleated and nucleated isotactic polypropylene microporous membranes have been prepared via thermally-induced solid-liquid phase separation of polymer-diluent mixtures. Three linear alkanes and mineral oil were used as the diluents and adipic acid was used as the nucleating agent. The membranes were formed under isothermal and non-isothermal crystallizing conditions. Membrane structures as determined by scanning electron microscope depended on polymer concentration, cooling rate, and the addition of nucleating agent.

引用

页码：31 / 40

页数：10

共 11 条

[1]

FLORY PJ, 1965, PRINCIPLES POLYM CHE, P507

[2] SPHERULITIC CRYSTALLIZATION FROM MELT .I. FRACTIONATION + IMPURITY SEGREGATION + THEIR INFLUENCE ON CRYSTALLINE MORPHOLOGY [J].