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NMR study of styrene-butadiene rubber (SBR) and TiO2 nanocomposites

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dc.contributor.authorArantes, Tatiane M.
dc.contributor.authorLeao, Katyuscya V.
dc.contributor.authorTavares, Maria Ines B.
dc.contributor.authorFerreira, Antonio Gilberto
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorCamargo, Emerson R.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionCtr Technol
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:17:38Z
dc.date.available2014-05-20T14:17:38Z
dc.date.issued2009-08-01
dc.description.abstractThe chemical behavior of styrene-butadiene rubber (SBR) and of the SBR/TiO2 and photodegraded SBR/TiO2 nanocomposites was investigated through nuclear magnetic resonance spectroscopy (NMR) in the solid state with magic angle spinning (MAS). The C-13 cross polarization/magic angle spinning (CP/MAS) routine spectrum allowed us to obtain information on the polymer microstructure and also to evaluate the domain mobilities. The variation contact time and the proton spin-lattice relaxation time in the rotating frame (T,pH) were determinant factors to evaluate the dynamic molecular motion. The NMR spectrum of the nanocomposites was dislocated 5 ppm to higher chemical shift, indicating the presence of a strong interaction between the polymer chains and the TiO2 nanoparticles. The VTC experiment showed a rigid domain in the SBR/TiO2 photodegraded nanocomposite due to cross-linking reactions. (C) 2009 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), LIEC, UFSCar, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Lab Ressonancia Magnet Nucl, UFSCar, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationCtr Technol, IMA UFRJ, BR-21945970 Rio de Janeiro, Brazil
dc.description.affiliationSão Paulo State Univ, UNESP, Dept Biochem & Technol Chem, Chem Inst Araraquara,LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Dept Biochem & Technol Chem, Chem Inst Araraquara,LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdCNPq: 555644/2006-5
dc.format.extent490-494
dc.identifierhttp://dx.doi.org/10.1016/j.polymertesting.2009.03.011
dc.identifier.citationPolymer Testing. Oxford: Elsevier B.V., v. 28, n. 5, p. 490-494, 2009.
dc.identifier.doi10.1016/j.polymertesting.2009.03.011
dc.identifier.issn0142-9418
dc.identifier.urihttp://hdl.handle.net/11449/25284
dc.identifier.wosWOS:000267727000006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPolymer Testing
dc.relation.ispartofjcr2.247
dc.relation.ispartofsjr0,669
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectNMRen
dc.subjectCarbon-13 solid stateen
dc.subjectNanocompositesen
dc.subjectPhotodegradationen
dc.titleNMR study of styrene-butadiene rubber (SBR) and TiO2 nanocompositesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQpt

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Araraquara - IQAR - Instituto de Química