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Article Dans Une Revue Langmuir Année : 2010

An easy way to control the morphology of colloidal polymer-oxide supraparticles through seeded dispersion polymerization

Résumé

SiO2/polystyrene colloidal supraparticles were synthesized through dispersion polymerization by using poly(N-vinylpyrrolidone) as stabilizer, in the presence of silica particles coated with methacryloxymethyltriethoxysilane. Scanning and transmission electron microscopy studies indicate that dumbbell-like or snowman-like supraparticles can be prepared 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. By decreasing both temperature and monomer concentration, while adding a varying amount of water in the alcoholic reaction medium, core−shell or other interesting morphology binary supraparticles were obtained.

Domaines

Matériaux
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Dates et versions

hal-00483221 , version 1 (12-05-2010)

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Citer

David Nguyen, Etienne Duguet, Elodie Bourgeat-Lami, Serge Ravaine. An easy way to control the morphology of colloidal polymer-oxide supraparticles through seeded dispersion polymerization. Langmuir, 2010, 26 (9), pp.6086-6090. ⟨10.1021/la100357q⟩. ⟨hal-00483221⟩
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