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Type: Artigo de evento
Title: Ceramics Derived From Hybrid Polymer And Multiwall Carbon Nanotubes
Author: Segatelli M.G.
Pires A.T.N.
Goncalves M.C.
Yoshida I.V.P.
Abstract: Ceramic samples (labelled NT and CS) were obtained from a hybrid polymeric precursor derived from poly(methylsiloxane) and divinylbenzene with and without carbon nanotubes (MWCNT), respectively, as an additional C-source. The precursor was pyrolysed under Ar atmosphere at 1500 °C for different pyrolysis times. XRD patterns of CS ceramics showed broad diffractions of β-SiC, C-graphitic and opaline-SiO2 phases. For NT ceramics, besides the diffractions observed for CS ceramics, an intense diffraction peak of cristobalite was observed. The introduction of MWCNT changed the morphology of the resulting ceramics and decreased the solubility of SiO2 in the matrix, promoting the formation of relatively large cristobalite crystals.
Rights: fechado
Identifier DOI: 
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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