Preparation of Polystyrene/Clay Nanocomposites by Free-Radical Polymerization in Dispersion

被引：12
|
作者：
Greesh, Nagi [1 ]
Hartmann, Patrice C. [1 ]
Sanderson, Ronald D. [1 ]
机构：
[1] Univ Stellenbosch, Dept Chem & Polymer Sci, ZA-7602 Stellenbosch, South Africa
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2009年 / 294卷 / 11期
关键词：
dispersion polymerization; exfoliation; intercalation; organoclay; polymer/clay nanocomposites; POLY(ETHYLENE OXIDE) MACROMONOMER; SILICATE NANOCOMPOSITES; EMULSION POLYMERIZATION; LAYERED SILICATE; METHACRYLATE)/CLAY NANOCOMPOSITES; MECHANICAL-PROPERTIES; BUTYL ACRYLATE; CLAY PLATELETS; PARTICLE-SIZE; STYRENE;
D O I：
10.1002/mame.200900129
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fully exfoliated PS/clay nanocomposites were prepared via FRP in dispersion. Na-MMT clay was pre-modified using MPTMS before being used in a dispersion polymerization process. The objective of this study was to determine the impact of the clay concentrations on the monomer conversion, the polymer molecular weight, and the morphology and thermal stability of the nanocomposites prepared via dispersion polymerization. DLS and SEM revealed that the particle size decreased and became more uniformly distributed with increasing clay loading. XRD and TEM revealed that nanocomposites at low clay loading yielded exfoliated structures, while intercalated structures were obtained at higher clay loading.
引用
收藏
页码：787 / 794
页数：8
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