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

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.

palavras-chave

INORGANIC PARTICLES; ENCAPSULATION; COMPOSITES; MECHANISM; FILMS

categoria

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

autores

Esteves, AC; Neves, MC; Barros-Timmons, A; Bourgeat-Lami, E; Liz-Marzan, L; Trindade, T

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