Porous epoxy thermosets obtained by a polymerization-induced phase separation process of a degradable thermoplastic polymer

被引：75

作者：

Loera, AG ^{[1
]}

Cara, F ^{[1
]}

Dumon, M ^{[1
]}

Pascault, JP ^{[1
]}

机构：

[1] Inst Natl Sci Appl, CNRS UMR 5627, Lab Mat Macromol, F-69621 Villeurbanne, France

来源：

MACROMOLECULES | 2002年 / 35卷 / 16期

关键词：

D O I：

10.1021/ma011567i

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A process for producing controlled porous epoxy thermosets is presented. It is based on a two-step temperature cure: a polymerization-induced phase separation at a moderate temperature (100120 degreesC) of a thermoplastic, poly(vinyl methyl ether) (PVME), in an epoxy-amine matrix followed by a high-temperature treatment (above 200 degreesC). A porous structure is created by the oxidative thermal degradation of PVME (extraction). Different porous or semiporous structures with submicrometer-sized voids (dispersed closed cells, i.e., spheres or open cells, i.e., bicontinuous percolating canals) are generated depending on the thermoplastic content and the phase-separation mechanism. The morphologies are analyzed quantitatively from transmission electron microscopy (TEM) photographs.

引用

页码：6291 / 6297

页数：7

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