Synthesis of exfoliated poly(styrene-co-acrylonitrile) copolymer/silicate nanocomposite by emulsion polymerization; monomer composition effect on morphology

被引：33

作者：

Choi, YS ^{[1
]}

Xu, MZ ^{[1
]}

Chung, IJ ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

来源：

POLYMER | 2003年 / 44卷 / 22期

关键词：

poly(styrene-co-acrylonitrile) copolymer; silicate; nanocomposites;

D O I：

10.1016/j.polymer.2003.08.020

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two types of SAN/silicate nanocomposites were prepared to set up the relationship between the composition of monomers and the resultant morphology of the composites using a pristine sodium montmorillonite (Na-MMT). SAN I series were synthesized with acrylonitrile in initial stage and a mixture of styrene and acrylonitrile in increment stage. SAN II series were prepared with the mixture of styrene and acrylonitrile throughout polymerization. SAN I series showed exfoliated states but SAN II series exhibited intercalated states because SAN I series consisted of hydrophilic AN initially. The chemical affinity between monomer and silicate had a strong influence on the morphology of SAN/silicate nanocomposites. The exfoliated SAN I series had enhanced moduli and glass transition temperatures, T-g, compared to the intercalated SAN II series and pure SAN. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：6989 / 6994

页数：6

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