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dc.contributor.authorBrandão, João Augusto Osóriopt_BR
dc.contributor.authorMorisso, Fernando Dal Pontpt_BR
dc.contributor.authorFrancisquetti, Edson Luizpt_BR
dc.contributor.authorSantana, Ruth Marlene Campomanespt_BR
dc.date.accessioned2022-12-22T04:52:24Zpt_BR
dc.date.issued2021pt_BR
dc.identifier.issn0104-1428pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/253052pt_BR
dc.description.abstractThe accumulation of polymeric residues has been one of the most impacting environmental problems in recent human history, coming, above all, from disposable artefacts, such as plastic bags. Processing polyolefins with pro-oxidant additives is an alternative to favour the abiotic degradation process of macromolecules, including thermooxidation, so that the oxygenated fragments produced can be assimilated by microorganisms. The objective of this work was to evaluate the process of thermomechanical oxidative degradation of polyethylene (PE) during tubular extrusion of HDPE/LDPE films, without and with 1% of two different pro-oxidants, d2wTM and benzoin. The results of viscosimetric and MFI analyses indicated smaller chain sizes in the additivated films. The FTIR spectra and contact angles indicate a higher presence of polar functional groups in the samples with pro-oxidants. The surface morphological analysis by SEM indicated difference of PE homogeneity in the films. Benzoin, however, proved to be a better pro-oxidant than d2wTM.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPolímeros (São Carlos). Vol. 31, n. 3 (2021), [Article] e2021029, p. 1-8pt_BR
dc.rightsOpen Accessen
dc.subjectPolietilenopt_BR
dc.subjectBenzoinen
dc.subjectd2wTMen
dc.subjectPolímeros : Degradaçãopt_BR
dc.subjectPolyethyleneen
dc.subjectOxidaçãopt_BR
dc.subjectPro-oxidantsen
dc.subjectThermooxidationen
dc.titleStructural changes of polyethylene in blown films with different pro-oxidantspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001153647pt_BR
dc.type.originNacionalpt_BR


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