Journal of Nanoscience and Nanotechnology 2006-02-01

Synthesis of SiO2-coated Bi2S3/poly(styrene) nanocomposites by in-situ polymerization.

A C Esteves, M C Neves, A Barros-Timmons, E Bourgeat-Lami, L Liz-Marzán, T Trindade

Index: J. Nanosci. Nanotechnol. 6(2) , 414-20, (2006)

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Abstract

New nanocomposites containing silica-coated Bi2S3 nanofibers were synthesised by in situ polymerization using two distinct synthetic strategies: emulsion and suspension polymerization. Transmission and scanning electron microscopy of the nanocomposite particles showed that in both cases the Bi2S3/SiO2 nanoparticles were densely coated with poly(styrene). In situ emulsion polymerization afforded nanocomposites in which the nanofibers were coated with polymer spheres whilst suspension polymerization gives rise to a homogeneous polymer layer coat. The morphology of the poly(styrene) coating observed is discussed considering the surface modification of the nanofibers and the polymerization technique involved.

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