無機粒子を含む複合高分子ラテックスの合成 (ポリマ-アロイの分子設計--多成分系高分子の合成と物性<特集号>)

概要

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Method for preparing composite polystyrene latices including silica particles in the core, has been examined under the various conditions. It was realized that an important factor to control was one on the surface treatments of the silica particles used as the seed. In the case the bare particles of silica were used in the polymerization, there was no capsulation of polymer, and new polymer particles were formed in the aqueous phase. On the other hand, in the case polymer-coated particles which were made by adsorbing hydroxypropyl cellulose (HPC) on the silica at the lower critical solution temperature (LCST) were used, encapsulation of polymer molecules occured and fairly monodisperse composite latices were prepared. This result indicated that the dense adsorption layer of HPC formed at the LCST played as a binder between the silica particle and growing polymer molecule in the polymerization in the presence of silica particles. Furthermore, the degree of encapsulation was examined by analyzing the Gel-Permeation Chromatogram of the polymeric material produced from the composite latices.
公益社団法人高分子学会の論文