Melt intercalation/exfoliation of polystyrene-sodium-montmorillonite nanocomposites using sulfonated polystyrene ionomer compatibilizers

被引：52

作者：

Bhiwankar, Nikhil N.

Weiss, R. A.

机构：

[1] Univ Connecticut, Inst Mat Sci, Dept Chem Engn, Storrs, CT 06269 USA

[2] Univ Connecticut, Polymer Program, Storrs, CT 06269 USA

来源：

POLYMER | 2006年 / 47卷 / 19期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

nanocomposites; ionomers; clay;

D O I：

10.1016/j.polymer.2006.07.017

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Quaternary ammonium salts of sulfonated polystyrene (SPS) were used as compatibilizers for melt intercalation of PS and pristine Na-montmorillonite. Tetra-octyl ammonium SPS and tetra-decyl ammonium SPS ionomeric compatibilizers produced significant exfoliation and a homogeneous dispersion of the polymer-clay nanocomposites. Wide angle X-ray diffraction and transmission electron microscopy were primarily used to characterize the morphology of the nanocomposites. Image analysis was used to measure the percentage exfoliation. Exfoliation increased with the increasing length of the alkyl chain of the ammonium counter-ion of the SPS ionomer. The nanocomposites containing ionomers exhibited higher storage moduli compared to nanocomposites without the compatibilizer. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：6684 / 6691

页数：8