RECULUSA, Stéphane; PONCET-LEGRAND, Céline; RAVAINE, Serge; MINGOTAUD, Christophe; DUGUET, Etienne; BOURGEAT-LAMI, Elodie

doi:10.1021/cm0116525

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RECULUSA, Stéphane
Centre de recherches Paul Pascal [CRPP]

PONCET-LEGRAND, Céline
Centre de recherches Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

RAVAINE, Serge
Centre de recherches Paul Pascal [CRPP]

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Chemistry of Materials. 2002, vol. 14, n° 5, p. 2354-2359

American Chemical Society

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Raspberrylike hybrid organic−inorganic materials consisting of spherical silica beads supporting smaller polystyrene particles were prepared through a heterophase polymerization process. In a first step, micrometer-sized silica particles were synthesized according to procedures inspired from the literature. In a second step, a poly(ethylene glycol) macromonomer was adsorbed on the surface of the silica beads. Finally, polymerization of styrene was achieved in water with a nonionic surfactant as an emulsifying agent and sodium persulfate as an initiator. Scanning and transmission electron microscopies show that the presence of the macromonomer on the surface of the silica particles is a determining parameter in order to get the raspberrylike morphology.< Leer menos

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Polymerization

Hybrid materials

Silica

Polystyrene

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Syntheses of raspberrylike silica/polystyrene materials

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