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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDias, D. dos Santos
dc.creatorCrespi, Marisa Spirandeli
dc.creatorRibeiro, Clovis Augusto
dc.date2014-05-20T14:19:18Z
dc.date2016-10-25T17:41:00Z
dc.date2014-05-20T14:19:18Z
dc.date2016-10-25T17:41:00Z
dc.date2008-11-01
dc.date.accessioned2017-04-05T22:30:55Z
dc.date.available2017-04-05T22:30:55Z
dc.identifierJournal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 94, n. 2, p. 539-543, 2008.
dc.identifier1388-6150
dc.identifierhttp://hdl.handle.net/11449/25821
dc.identifierhttp://acervodigital.unesp.br/handle/11449/25821
dc.identifier10.1007/s10973-008-8435-2
dc.identifierWOS:000260878000034
dc.identifier0000-0002-7984-5908
dc.identifierhttp://dx.doi.org/10.1007/s10973-008-8435-2
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/870660
dc.descriptionThe 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.
dc.languageeng
dc.publisherSpringer
dc.relationJournal of Thermal Analysis and Calorimetry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectPET
dc.subjectvarnish
dc.subjectvarnish and PET-R
dc.titleNon-isothermal decomposition kinetics of the interaction of poly(ethylene terephthalate) with alkyd varnish
dc.typeOtro


Este ítem pertenece a la siguiente institución