Porous Ceramic Materials From Polysiloxane-Clay Composites

dc.creatorSegatelli, MG
dc.creatorKaneko, MLQA
dc.creatorSilva, VP
dc.creatorYoshida, IVP
dc.date2014
dc.dateAPR
dc.date2014-08-01T18:36:19Z
dc.date2015-11-26T18:05:02Z
dc.date2014-08-01T18:36:19Z
dc.date2015-11-26T18:05:02Z
dc.date.accessioned2018-03-29T00:47:17Z
dc.date.available2018-03-29T00:47:17Z
dc.identifierJournal Of The Brazilian Chemical Society. Soc Brasileira Quimica, v. 25, n. 4, n. 716, n. 725, 2014.
dc.identifier0103-5053
dc.identifier1678-4790
dc.identifierWOS:000333741500013
dc.identifier10.5935/0103-5053.20140025
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/81438
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/81438
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1293022
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThis study describes the structural, porosity and morphological changes of porous polymer-derived ceramics obtained by pyrolysis of polysiloxane-clay composites, containing a pore former based on poly(dimethylsiloxane) and nickel acetate as nanostructure inductor. The composites were blended in a steel mold, thermally treated at 950 degrees C and 1500 degrees C (inert atmosphere). The increase of the temperature together with the presence of Ni resulted in more crystalline and porous ceramics and a higher ordering process of C-free phase in the Ni-containing sample. The ceramics revealed a wide pore size distribution, from micro to macropores. At 950 degrees C the ceramic revealed the presence of pores and Ni- and C-rich islands dispersed on the fracture surface. However, at 1500 degrees C, nanowires with large aspect ratio, constituted by Si, C and O elements were generated. Thus, the presence of Ni associated to higher pores amount gave rise to an appropriate environment for the nucleation and growth of SiCO nanowires.
dc.description25
dc.description4
dc.description716
dc.description725
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESP [05/58460-0, 03/09926-1]
dc.descriptionCNPq [Proc. 305916/2006-8]
dc.languageen
dc.publisherSoc Brasileira Quimica
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationJournal Of The Brazilian Chemical Society
dc.relationJ. Braz. Chem. Soc.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectpolysiloxane
dc.subjectceramic matrix composites
dc.subjectclay
dc.subjectpyrolysis
dc.subjectSilicon Oxycarbide Glasses
dc.subjectHigh-temperature Behavior
dc.subjectPolymer-derived Ceramics
dc.subjectStructural-characterization
dc.subjectCarbon Nanotubes
dc.subjectCarbide Ceramics
dc.subjectSicn Ceramics
dc.subjectOrganic-dyes
dc.subjectPyrolysis
dc.subjectPrecursor
dc.titlePorous Ceramic Materials From Polysiloxane-Clay Composites
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución