Carbon dioxide formation during initial stages of photodegradation of poly(ethyleneterephthalate) (PET) films

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dc.contributor.authorFernando, S. S.
dc.contributor.authorChristensen, P. A.
dc.contributor.authorEgerton, T. A.
dc.contributor.authorEveson, R.
dc.contributor.authorMartins-Franchetti, S. M. [UNESP]
dc.contributor.authorVoisin, D.
dc.contributor.authorWhite, J. R.
dc.contributor.institutionNewcastle Univ
dc.contributor.institutionDuPont Teijin Films
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T18:47:28Z
dc.date.accessioned2014-05-20T13:56:24Z
dc.date.available2013-09-30T18:47:28Z
dc.date.available2014-05-20T13:56:24Z
dc.date.issued2009-04-01
dc.description.abstractCarbon dioxide (CO(2)) generation by ultraviolet irradiation of poly(ethyleneterephthalate) (PET) films in oxygen was monitored by in situ Fourier transform infrared spectroscopy. Typically, the CO(2) absorbance increased by similar to 100 x 10(-4) in 180 min, with no evidence of hindrance by restricted diffusion of O(2) into, or CO(2) out of, the films. It was concluded that Fourier transform infrared spectrometry monitoring of CO(2) conveniently, reliably and rapidly measures PET films photostability.Quantitative analysis of the CO(2) evolved from progressively thinner films from successive stages of the biaxial film drawing process indicated that CO(2) was generated within a few microns of the film surface and that the same amounts were generated from the irradiated surface of 540 mu m cast, 150 mu m uniaxially drawn and 85 mu m biaxially drawn films. Although drawing increased film crystallinity, photoreactivity appeared to be unchanged. However, total CO(2) formation followed the pattern PET cast<PET uniaxial<PET biaxial because ultraviolet irradiation attenuation reduced photo generation at the rear of thick films.en
dc.description.affiliationNewcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
dc.description.affiliationDuPont Teijin Films, Middlesbrough TS90 8JF, Cleveland, England
dc.description.affiliationUNESP, Dept Bioquim & Microbiol, Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Bioquim & Microbiol, Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipHuntsman Pigments
dc.description.sponsorshipInnovia Films
dc.format.extent549-555
dc.identifierhttp://dx.doi.org/10.1179/174328408X323096
dc.identifier.citationMaterials Science and Technology. Leeds: Maney Publishing, v. 25, n. 4, p. 549-555, 2009.
dc.identifier.doi10.1179/174328408X323096
dc.identifier.issn0267-0836
dc.identifier.urihttp://hdl.handle.net/11449/20161
dc.identifier.wosWOS:000265590200016
dc.language.isoeng
dc.publisherManey Publishing
dc.relation.ispartofMaterials Science and Technology
dc.relation.ispartofjcr1.803
dc.relation.ispartofsjr0,889
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPoly(ethyleneterephthalate) (PET)en
dc.subjectPhotodegradationen
dc.subjectFourier transform infrared spectrometryen
dc.subjectCO(2)en
dc.subjectUltraviolet irradiationen
dc.titleCarbon dioxide formation during initial stages of photodegradation of poly(ethyleneterephthalate) (PET) filmsen
dc.typeArtigo
dcterms.licensehttp://maneypublishing.com/index.php/resources/authors/copyright_and_permissions_information_for_authors/
dcterms.rightsHolderManey Publishing
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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