Vinylbenzyl chloride was allowed to react with a low‐molecular‐weight oligomer of butadiene in order to give a material that could then be used to alkylate an amine to form an ammonium salt. This ammonium salt was ion‐exchanged onto a clay to give a new organically modified clay, which was used to prepare polystyrene‐clay nanocomposites by solution and bulk polymerization and by melt blending. The nanocomposites were characterized by using X‐ray diffraction, transmission electron microscopy, thermogravimetric analysis, cone calorimetry, and the evaluation of mechanical properties. These systems show good nanodispersion and improvement in thermal and mechanical properties. J. Vinyl Addit. Technol. 10:44–51, 2004.
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