Effect of polyol excess on the electrical property of vegetable-polyurethane film
dc.contributor.author | Kanda, D. H. F. [UNESP] | |
dc.contributor.author | Nagashima, Haroldo Naoyuki [UNESP] | |
dc.contributor.author | Malmonge, J. A. [UNESP] | |
dc.contributor.author | Sakamoto, W. K. [UNESP] | |
dc.contributor.author | Chierice, G. O. | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Universidade de São Paulo (USP) | |
dc.date.accessioned | 2014-05-20T13:29:49Z | |
dc.date.available | 2014-05-20T13:29:49Z | |
dc.date.issued | 2008-08-01 | |
dc.description.abstract | Freestanding 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.affiliation | Univ São Paulo State, UNESP, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil | |
dc.description.affiliation | Univ São Paulo, Inst Chem, São Carlos, SP, Brazil | |
dc.description.affiliationUnesp | Univ São Paulo State, UNESP, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.format.extent | 5436-5440 | |
dc.identifier | http://dx.doi.org/10.1007/s10853-008-2843-3 | |
dc.identifier.citation | Journal of Materials Science. New York: Springer, v. 43, n. 16, p. 5436-5440, 2008. | |
dc.identifier.doi | 10.1007/s10853-008-2843-3 | |
dc.identifier.issn | 0022-2461 | |
dc.identifier.lattes | 4802713321439692 | |
dc.identifier.lattes | 0607115205166943 | |
dc.identifier.lattes | 0896348165708140 | |
dc.identifier.uri | http://hdl.handle.net/11449/10102 | |
dc.identifier.wos | WOS:000258573900003 | |
dc.language.iso | eng | |
dc.publisher | Springer | |
dc.relation.ispartof | Journal of Materials Science | |
dc.relation.ispartofjcr | 2.993 | |
dc.relation.ispartofsjr | 0,807 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.title | Effect of polyol excess on the electrical property of vegetable-polyurethane film | en |
dc.type | Artigo | |
dcterms.license | http://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0 | |
dcterms.rightsHolder | Springer | |
unesp.author.lattes | 4802713321439692 | |
unesp.author.lattes | 0607115205166943 | |
unesp.author.lattes | 0896348165708140 | |
unesp.campus | Universidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteira | pt |
unesp.department | Física e Química - FEIS | pt |
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