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dc.contributor.authorKanda, D. H. F.-
dc.contributor.authorNagashima, Haroldo Naoyuki-
dc.contributor.authorMalmonge, J. A.-
dc.contributor.authorSakamoto, W. K.-
dc.contributor.authorChierice, G. O.-
dc.date.accessioned2014-05-20T13:29:49Z-
dc.date.accessioned2016-10-25T16:49:05Z-
dc.date.available2014-05-20T13:29:49Z-
dc.date.available2016-10-25T16:49:05Z-
dc.date.issued2008-08-01-
dc.identifierhttp://dx.doi.org/10.1007/s10853-008-2843-3-
dc.identifier.citationJournal of Materials Science. New York: Springer, v. 43, n. 16, p. 5436-5440, 2008.-
dc.identifier.issn0022-2461-
dc.identifier.urihttp://hdl.handle.net/11449/10102-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/10102-
dc.description.abstractFreestanding castor oil-based polyurethane (PU) film was obtained using spin-coating method. The effect of polyol content was analysed by means of thermally stimulated depolarisation current and AC dielectric measurements techniques. Two relaxation peaks were observed in the temperature range of -40 to 60 degrees C for PU with different polyol contents. The presence of polyol excess provides a shift to lower temperature of the a relaxation and the decrease in the activation energy of the transition in this region might be attributed to the plasticising effect of the polyol. The peak at higher temperature is due to the Maxwell-Wagner-Sillars relaxation, which also shifts in the low temperature direction as the polyol content is increased.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.format.extent5436-5440-
dc.language.isoeng-
dc.publisherSpringer-
dc.sourceWeb of Science-
dc.titleEffect of polyol excess on the electrical property of vegetable-polyurethane filmen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationUniv São Paulo State, UNESP, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil-
dc.description.affiliationUniv São Paulo, Inst Chem, São Carlos, SP, Brazil-
dc.description.affiliationUnespUniv São Paulo State, UNESP, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil-
dc.identifier.doi10.1007/s10853-008-2843-3-
dc.identifier.wosWOS:000258573900003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Materials Science-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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