Non-isothermal decomposition kinetics of the interaction of poly(ethylene terephthalate) with alkyd varnish

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dc.contributor.authorDias, D. dos Santos [UNESP]
dc.contributor.authorCrespi, Marisa Spirandeli [UNESP]
dc.contributor.authorRibeiro, Clovis Augusto [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:19:18Z
dc.date.available2014-05-20T14:19:18Z
dc.date.issued2008-11-01
dc.description.abstractThe recycling of soft drink bottles poly(ethylene terephthalate) (PET) has been used as an additive in varnish containing alkyd resin. The PET, called to recycled PET (PET-R), was added to the varnish in increasing amounts. Samples of varnish containing PET-R (VPET-R) were used as a film onto slides and its thermal properties were evaluated using thermogravimetry (TG). Throughout the visual analysis and thermal behavior of VPET-R it is possible to identify that the maximum amount of PET-R added to the varnish without changing in the film properties was 2%.The kinetic parameters, such as activation energy (E) and the pre-exponential factor (A) were calculated by the isoconversional Flynn-Wall-Ozawa method for the samples containing 0.5 to 2.0% PET-R. A decrease in the values of E was verified for lower amounts of PET-R for the thermal decomposition reaction. A kinetic compensation effect (KCE) represented by the lnA=-13.42+0.23E equation was observed for all samples. The most suitable kinetic model to describe this decomposition process is the autocatalytic Sestak-Berggren, being the model applied to heterogeneous systems.en
dc.description.affiliationSão Paulo State Univ, UNESP, Inst Quim, Araraquara, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Inst Quim, Araraquara, Brazil
dc.format.extent539-543
dc.identifierhttp://dx.doi.org/10.1007/s10973-008-8435-2
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 94, n. 2, p. 539-543, 2008.
dc.identifier.doi10.1007/s10973-008-8435-2
dc.identifier.issn1388-6150
dc.identifier.lattes7471310113999140
dc.identifier.lattes8498310891810082
dc.identifier.orcid0000-0002-7984-5908
dc.identifier.urihttp://hdl.handle.net/11449/25821
dc.identifier.wosWOS:000260878000034
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.ispartofjcr2.209
dc.relation.ispartofsjr0,587
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPETen
dc.subjectvarnishen
dc.subjectvarnish and PET-Ren
dc.titleNon-isothermal decomposition kinetics of the interaction of poly(ethylene terephthalate) with alkyd varnishen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes7471310113999140
unesp.author.lattes8498310891810082[3]
unesp.author.orcid0000-0002-7984-5908[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Analítica - IQ