NGUYEN, David; RAVAINE, Serge; BOURGEAT-LAMI, Elodie; DUGUET, Etienne

doi:10.1039/b926438h

Métadonnées

Licence d’utilisation du document

NGUYEN, David
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Université Sciences et Technologies - Bordeaux 1 [UB]

RAVAINE, Serge
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Université Sciences et Technologies - Bordeaux 1 [UB]

BOURGEAT-LAMI, Elodie
Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 [C2P2]

Langue

Article de revue

Ce document a été publié dans

Journal of Materials Chemistry. 2010, vol. 20, n° 42, p. 9392-9400

Royal Society of Chemistry

Résumé en anglais

Dispersion polymerization of styrene was performed in the presence of methacryloxymethyltrimethoxysilane-derivatized silica seeds in various experimental conditions in order to get micron-sized polystyrene/silica clusters of controlled morphology. It is demonstrated that asymmetric clusters (dumbbell-like or snowman-like) are easily prepared in a large range of sizes by taking advantage of the coalescence phenomenon which occurs between growing polymer nodules in pure alcoholic medium, at high monomer concentration and/or at high temperature. A model describing the evolution of the morphologies as a function of the seed size and concentration is proposed. Moreover, micron-sized multipod-like or raspberry-like particles were also obtained by adding water in the dispersing medium. The experimental parameters which allow control of the cluster morphology are compared to those of the seeded-emulsion polymerization, which is efficient for preparing submicron-sized clusters.< Réduire

Mots clés en italien

Silica-polystyrene clusters

Dispersion polymerization

Métadonnées

Licence d’utilisation du document

About the suitability of the seeded-dispersion polymerization technique for preparing micron-sized silica-polystyrene clusters

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en italien

DOI

Origine

Unités de recherche