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

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/Si...

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Detalhes bibliográficos
Autor principal: Esteves, A. C. (author)
Outros Autores: Neves, M. C. (author), Barros-Timmons, A. (author), Bourgeat-Lami, E. (author), Liz-Marzán, L. (author), Trindade, T. (author)
Formato: article
Idioma:eng
Publicado em: 2006
Assuntos:
Nanocomposites
polymerization
nanofibers
bismuth sulphide
silica
Texto completo:http://hdl.handle.net/10773/5746
País:Portugal
Oai:oai:ria.ua.pt:10773/5746
Descrição
Resumo: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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