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From Raspberry-like to Dumbbell-like Hybrid Colloids through Surface-assisted Nucleation and Growth of Polystyrene Nodules onto Macromonomer-modified Silica Nanoparticles

Published online by Cambridge University Press:  01 February 2011

Etienne Duguet ,
Stéphane Reculusa ,
Adeline Perro ,
Céline Poncet-Legrand ,
Serge Ravaine ,
Elodie Bourgeat-Lami  and
Christophe Mingotaud
Etienne Duguet
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux, CNRS, Université Bordeaux-1, 87 avenue du Docteur Schweitzer, F-33608 Pessac, France
Stéphane Reculusa
Affiliation:
Centre de Recherche Paul Pascal, CNRS, Université Bordeaux-1, 115 avenue du Docteur Schweitzer, F-33608 Pessac, France
Adeline Perro
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux, CNRS, Université Bordeaux-1, 87 avenue du Docteur Schweitzer, F-33608 Pessac, France Centre de Recherche Paul Pascal, CNRS, Université Bordeaux-1, 115 avenue du Docteur Schweitzer, F-33608 Pessac, France
Céline Poncet-Legrand
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux, CNRS, Université Bordeaux-1, 87 avenue du Docteur Schweitzer, F-33608 Pessac, France Centre de Recherche Paul Pascal, CNRS, Université Bordeaux-1, 115 avenue du Docteur Schweitzer, F-33608 Pessac, France
Serge Ravaine
Affiliation:
Centre de Recherche Paul Pascal, CNRS, Université Bordeaux-1, 115 avenue du Docteur Schweitzer, F-33608 Pessac, France
Elodie Bourgeat-Lami
Affiliation:
Laboratoire de Chimie et des Procédés de Polymérisation, CPE, CNRS, 43 boulevard du 11 novembre, BP 2077, F-69616 Villeurbanne, France
Christophe Mingotaud
Affiliation:
Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique, Université Paul Sabatier, CNRS, 118 route de Narbonne, F-31062 Toulouse, France
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Abstract

Colloidal particles with a controlled morphology combining both organic and inorganic parts were synthesized through a seeded emulsion polymerization process. Silica seed particles (from 50 to 150 nm in diameter) were first surface-modified by the adsorption of an oxyethylene-based macromonomer. Then, emulsion polymerization of styrene was carried out in presence of these particles, the formation of polystyrene nodules being highly favored at the silica surface in such conditions. The ratio between the number of silica seeds and the number of growing polystyrene nodules appeared to be one of the key parameters to control the morphology of the final hybrid nanoparticles. When this ratio is close to 1, original hybrid dumbbell-like nanoparticles were mainly obtained.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE1.1
Copyright
Copyright © Materials Research Society 2005

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References

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