Electric characterization of a hybrid composite based on POMA/P(VDF- TrFE)/Zn2SiO4 : Mn using impedance spectroscopy

dc.contributor.authorGozzi, G.
dc.contributor.authorChinaglia, D. L.
dc.contributor.authorSchmidt, T. F.
dc.contributor.authorWalmsley, L.
dc.contributor.authorConstantino, C. J. L.
dc.contributor.authorJob, A. E.
dc.contributor.authorSantos, L. F.
dc.contributor.authorOliveira, O. N.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:21:05Z
dc.date.available2014-05-20T15:21:05Z
dc.date.issued2006-09-07
dc.description.abstractUnderstanding the microscopic origin of the dielectric properties of disordered materials has been a challenge for many years, especially in the case of samples with more than one phase. For polar dielectrics, for instance, the Lepienski approach has indicated that the random free energy barrier model of Dyre must be extended. Here we analyse the dielectric properties of a polymer blend made up with the semiconducting poly(o-methoxyaniline) and poly( vinylidene fluoride-trifluorethylene) POMA/P(VDF-TrFE), and of a hybrid composite of POMA/P(VDF-TrFE)/Zn2SiO4:Mn. For the blend, the Lepienski model, which takes into account the rotation or stretching of electric dipoles, provided excellent fitting to the ac impedance data. Because two phases had to be assumed for the hybrid composite, we had to extend the Lepienski model to fit the data, by incorporating a second transport mechanism. The two mechanisms were associated with the electronic transport in the polymeric matrix and with transport at the interfaces between Zn2SiO4: Mn microparticles and the polymeric matrix, with the relative importance of the interfacial component increasing with the percentage of Zn2SiO4: Mn in the composite. The analysis of impedance data at various temperatures led to a prediction of the theoretical model of a change in morphology at 190 +/- 40 K, and this was confirmed experimentally with a differential scanning calorimetry experiment.en
dc.description.affiliationUNESP, Inst Geociencias & Ciências Exatas, BR-13500970 Rio Claro, SP, Brazil
dc.description.affiliationUNESP, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Geociencias & Ciências Exatas, BR-13500970 Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent3888-3894
dc.identifierhttp://dx.doi.org/10.1088/0022-3727/39/17/027
dc.identifier.citationJournal of Physics D-applied Physics. Bristol: Iop Publishing Ltd, v. 39, n. 17, p. 3888-3894, 2006.
dc.identifier.doi10.1088/0022-3727/39/17/027
dc.identifier.issn0022-3727
dc.identifier.lattes8870539749821067
dc.identifier.urihttp://hdl.handle.net/11449/32258
dc.identifier.wosWOS:000239991000028
dc.language.isoeng
dc.publisherIop Publishing Ltd
dc.relation.ispartofJournal of Physics D: Applied Physics
dc.relation.ispartofjcr2.373
dc.relation.ispartofsjr0,717
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleElectric characterization of a hybrid composite based on POMA/P(VDF- TrFE)/Zn2SiO4 : Mn using impedance spectroscopyen
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/page/copyright
dcterms.rightsHolderIop Publishing Ltd
unesp.author.lattes8870539749821067
unesp.author.lattes6475585105456744[6]
unesp.author.lattes6118325967319836[5]
unesp.author.orcid0000-0001-8359-1966[3]
unesp.author.orcid0000-0001-8873-2086[1]
unesp.author.orcid0000-0002-1979-8257[6]
unesp.author.orcid0000-0001-7376-2717[7]
unesp.author.orcid0000-0002-5399-5860[8]
unesp.author.orcid0000-0002-5921-3161[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição: