Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
dc.contributor.author | Candal Pazos, María Virginia | |
dc.contributor.author | Safari, Maryam | |
dc.contributor.author | Fernández San Martín, Mercedes | |
dc.contributor.author | Otaegi Tena, Itziar | |
dc.contributor.author | Mugica Iztueta, Miren Agurtzane | |
dc.contributor.author | Zubitur Soroa, María Manuela | |
dc.contributor.author | Gerrica-Echevarria, Gonzalo | |
dc.contributor.author | Sebastián, Víctor | |
dc.contributor.author | Irusta, Silvia | |
dc.contributor.author | Loaeza, David | |
dc.contributor.author | Maspoch, Maria Lluisa | |
dc.contributor.author | Santana, Orlando O. | |
dc.contributor.author | Müller Sánchez, Alejandro Jesús | |
dc.date.accessioned | 2021-11-03T09:32:34Z | |
dc.date.available | 2021-11-03T09:32:34Z | |
dc.date.issued | 2021-10-14 | |
dc.identifier.citation | Polymers 13(20) : (2021) // Article ID 3531 | es_ES |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | http://hdl.handle.net/10810/53698 | |
dc.description.abstract | The recyclability of opaque PET, which contains TiO2 nanoparticles, has not been as well-studied as that of transparent PET. The objective of this work is to recycle post-consumer opaque PET through reactive extrusion with Joncryl. The effect of the reactive extrusion process on the molecular structure and on the thermal/mechanical/rheological properties of recycling post-consumer opaque PET (r-PET) has been analyzed. A 1% w/w Joncryl addition caused a moderate increase in the molecular weight. A moderate increase in chain length could not explain a decrease in the overall crystallization rate. This result is probably due to the presence of branches interrupting the crystallizable sequences in reactive extruded r-PET (REX-r-PET). A rheological investigation performed by SAOS/LAOS/elongational studies detected important structural modifications in REX-r-PET with respect to linear r-PET or a reference virgin PET. REX-r-PET is characterized by a slow relaxation process with enlarged elastic behaviors that are characteristic of a long-chain branched material. The mechanical properties of REX-r-PET increased because of the addition of the chain extender without a significant loss of elongation at the break. The reactive extrusion process is a suitable way to recycle opaque PET into a material with enhanced rheological properties (thanks to the production of a chain extension and long-chain branches) with mechanical properties that are comparable to those of a typical virgin PET sample. | es_ES |
dc.description.sponsorship | We would like to acknowledge funding by the EU Interreg H2020 program through project POCTEFA EFA329/19. This work also received funding from the Basque Government, grant IT1309-19. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | recycled opaque PET | es_ES |
dc.subject | reactive extrusion | es_ES |
dc.subject | chain extension | es_ES |
dc.subject | long-chain branching | es_ES |
dc.title | Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2021-10-22T13:56:26Z | |
dc.rights.holder | 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/2073-4360/13/20/3531/htm | es_ES |
dc.identifier.doi | 10.3390/polym13203531 | |
dc.departamentoes | Polímeros y Materiales Avanzados: Física, Química y Tecnología | |
dc.departamentoeu | Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia |
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Except where otherwise noted, this item's license is described as 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).