Study of the thermal resistance of alpha-phase aluminum oxide (alpha-Al2O3) films deposited on the paper substrate

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dc.contributor.authorLisboa, A. J. T.
dc.contributor.authorVasconcelos, N. S. L. S.
dc.contributor.authorRangel, J. H. G.
dc.contributor.authorOliveira, M. M. O.
dc.contributor.authorLongo, E. [UNESP]
dc.contributor.authorVarela, J. A. [UNESP]
dc.contributor.authorVasconcelos, J. S.
dc.contributor.institutionPostgrad Program Mat Engn PPGEM IFMA
dc.contributor.institutionFed Inst Maranhao IFMA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-12-03T13:08:38Z
dc.date.available2014-12-03T13:08:38Z
dc.date.issued2014-08-01
dc.description.abstractThe purpose of this study was to increase the thermal resistance of a cellulose substrate, using films (a mixture of corundum-phase aluminum oxide, (x-Al2O3, and a PVA solution). The corundum phase, which was chosen due to its high thermal resistance, was obtained using an adaptation of Pechini's polymeric precursor method. A polyvinyl alcohol (PVA) solution was used as a medium for mixing the oxide for subsequent deposition on a paper substrate. The materials were characterized by X-ray diffraction (XRD) and field emission gun scanning electron microscopy (BEG-SEM) coupled with energy dispersive X-ray spectrometry (EDS). The thermal behavior of the material was investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC). The EDS results indicate that all the samples with deposited a-phase aluminum oxide contain the chemical elements (Al and O) originating from the a-phase, while the surface analysis indicated that the paper substrates were completely coated with the films. The TG and DSC analyses of the thermal resistance of the film-coated substrate indicate that it was impossible to increase the thermal resistance of the paper substrate because the events that occurred (decomposition of cellulose and pyrolysis of lignin, hemicellulose and PVA) took place in the same temperature range, as has been reported in the literature for samples of the paper substrate without deposited film. (c) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.en
dc.description.affiliationPostgrad Program Mat Engn PPGEM IFMA, Sao Luis, MA, Brazil
dc.description.affiliationFed Inst Maranhao IFMA, Dept Chem DAQ, Sao Luis, Maranhao, Brazil
dc.description.affiliationState Sao Paulo Univ UNESP, Dept Chem, Sao Paulo, Brazil
dc.description.affiliationFed Inst Maranhao IFMA, Dept Electroelect DEE, Sao Luis, Maranhao, Brazil
dc.description.affiliationUnespState Sao Paulo Univ UNESP, Dept Chem, Sao Paulo, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFAPEMA
dc.format.extent9509-9516
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2014.02.024
dc.identifier.citationCeramics International. Oxford: Elsevier Sci Ltd, v. 40, n. 7, p. 9509-9516, 2014.
dc.identifier.doi10.1016/j.ceramint.2014.02.024
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/11449/111411
dc.identifier.wosWOS:000337015200071
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCeramics International
dc.relation.ispartofjcr3.057
dc.relation.ispartofsjr0,784
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFilmsen
dc.subjectCorundumen
dc.subjectThermal resistanceen
dc.titleStudy of the thermal resistance of alpha-phase aluminum oxide (alpha-Al2O3) films deposited on the paper substrateen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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