Silicone rubbers filled with TiO2: Characterization and photocatalytic activity

dc.creatorSilva, VP
dc.creatorPaschoalino, MP
dc.creatorGoncalves, MC
dc.creatorFelisberti, MI
dc.creatorJardim, WF
dc.creatorYoshida, IVP
dc.date2009
dc.date42005
dc.date2014-11-15T14:46:28Z
dc.date2015-11-26T16:11:35Z
dc.date2014-11-15T14:46:28Z
dc.date2015-11-26T16:11:35Z
dc.date.accessioned2018-03-28T23:00:04Z
dc.date.available2018-03-28T23:00:04Z
dc.identifierMaterials Chemistry And Physics. Elsevier Science Sa, v. 113, n. 1, n. 395, n. 400, 2009.
dc.identifier0254-0584
dc.identifierWOS:000262343500073
dc.identifier10.1016/j.matchemphys.2008.07.104
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75592
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75592
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75592
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1267124
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCompounding of silicone rubbers with TiO2 was carried out in a two-roll mill from a mixture of TiO2 and poly(dimethylsiloxane) (PDMS) with several other additives. The silicone matrix was crosslinked by a platinum-catalyzed hydrosilylation reaction. Characterization of the rubbers was per-formed by thermogravimetric and dynamic mechanical analyses, swelling measurements in toluene and in a salicylic acid/water solution, UV-vis spectroscopy and field emission scanning electron microscopy. The photocatalytic activity of the rubbers was evaluated with respect to the photodegradation of salicylic acid in aqueous solution under UV radiation, by measuring total organic carbon. The thermal stability of the PDMS matrix was enhanced by the addition of 10 phr (parts per hundred parts of rubber, by weight) of TiO2, but a further increase in the quantity of TiO2 favored thermal degradation of the matrix. The stiffening effect promoted by the incorporation of TiO2 into the matrix was more pronounced at higher TiO2 amount. The increase in the quantity of TiO2 also promoted a decrease in the crosslinking density of the matrix, favoring the swelling of the rubbers. The rubber with 78 phr of TiO2 degraded 56% of the salicylic acid from an aqueous solution. (C) 2008 Elsevier B.V. All rights reserved.
dc.description113
dc.description1
dc.description395
dc.description400
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFAPESP [03/09926-1, 04/04810-8]
dc.descriptionCNPq [142432/2006-7, 305916/2006-8]
dc.languageen
dc.publisherElsevier Science Sa
dc.publisherLausanne
dc.publisherSuíça
dc.relationMaterials Chemistry And Physics
dc.relationMater. Chem. Phys.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectTiO2
dc.subjectSilicone
dc.subjectRubbers
dc.subjectPhotoactivity
dc.subjectPervaporation Membranes
dc.subjectPermeability Evaluation
dc.subjectOxycarbide Glasses
dc.subjectAqueous-solutions
dc.subjectTitanium-dioxide
dc.subjectSupported Tio2
dc.subjectSalicylic-acid
dc.subjectDegradation
dc.subjectRemoval
dc.subjectPdms
dc.titleSilicone rubbers filled with TiO2: Characterization and photocatalytic activity
dc.typeArtículos de revistas


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