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Thermal analysis as a quality tool for assessing the influence of thermo-mechanical degradation on recycled poly(ethylene terephthalate)

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Thermal analysis as a quality tool for assessing the influence of thermo-mechanical degradation on recycled poly(ethylene terephthalate)

dc.contributor.author	Badia Valiente, José David
dc.contributor.author	Vilaplana, Francisco
dc.contributor.author	Karlsson, S.
dc.contributor.author	Ribes Greus, A.
dc.date.accessioned	2019-10-22T13:38:40Z
dc.date.available	2019-10-22T13:38:40Z
dc.date.issued	2009
dc.identifier.citation	Badia Valiente, José David Vilaplana, Francisco Karlsson, S. Ribes Greus, A. 2009 Thermal analysis as a quality tool for assessing the influence of thermo-mechanical degradation on recycled poly(ethylene terephthalate) Polymer Testing 28 2 169 175
dc.identifier.uri	https://hdl.handle.net/10550/71790
dc.description.abstract	Mechanical recycling of poly(ethylene terephthalate) (PET) was simulated by multiple processing to assess the effects of thermo-mechanical degradation, and characterized using rheological and thermal analysis techniques. Thermo-mechanical degradation under repeated extrusion induces chain scission reactions in PET, which result in a dramatic loss in the deformation capabilities and an increase in the fluidity of the polymer under reprocessing, reducing its recycling possibilities after four extrusion cycles. Multiple reprocessing severely affects the storage modulus and the microstructure of recycled PET, both in the amorphous and crystalline regions. Multimodal melting behavior is observed for reprocessed PET, indicating heterogeneous and segregated crystalline regions. A deconvolution procedure has been applied to individually characterize each crystalline population in terms of lamellar thickness distribution and partial crystallinity. Thermal analysis techniques such as differential scanning calorimetry (DSC) and dynamic-mechanical analysis (DMA) have proved to be suitable techniques for the quality assessment of recycled PET, giving unequivocal information about its degree of degradation compared to the common technological measurements of melt-mass flow rate (MFR) or oxidative stability (TOx).
dc.language.iso	eng
dc.relation.ispartof	Polymer Testing, 2009, vol. 28, num. 2, p. 169-175
dc.subject	Solucions polimèriques
dc.subject	Termoplàstics
dc.title	Thermal analysis as a quality tool for assessing the influence of thermo-mechanical degradation on recycled poly(ethylene terephthalate)
dc.type	journal article	es_ES
dc.date.updated	2019-10-22T13:38:41Z
dc.identifier.doi	10.1016/j.polymertesting.2008.11.010
dc.identifier.idgrec	134908
dc.rights.accessRights	open access	es_ES