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Synthesis of Anisotropic Polymer Particles with Soap-Free Emulsion Polymerization in the Presence of a Reactive Silane Coupling Agent

✍ Scribed by Daisuke Nagao; Masahiko Hashimoto; Kentaro Hayasaka; Mikio Konno

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 369 KB
Volume: 29
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200800279

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✦ Synopsis

Abstract

A novel two step method has been developed for the preparation of anisotropic polymer particles using soap‐free emulsion polymerization in the presence of the reactive silane coupling agent 3‐methacryloxypropyltrimethoxysilane (MPTMS). In the first step, seed polymer particles were prepared in the presence of MPTMS in water. In the second step, another polymerization was conducted in the presence of the seed particles, which induced anisotropic protrusion of polymer from the seed particles. The two step method is applicable to the preparation of anisotropic polymer particles containing inorganic particles such as silica. Silica particles inside the anisotropic polymer particles were dissolved with hydrofluoric acid, which created hollow polymer particles with anisotropy.

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