Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET

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 struct...

Descripción completa

Detalles Bibliográficos
Autores: Candal Pazos, María Virginia, Safari, Maryam, Fernández San Martín, Mercedes, Otaegi Tena, Itziar, Mugica Iztueta, Miren Agurtzane, Zubitur Soroa, María Manuela, Gerrica-Echevarria, Gonzalo, Sebastián, Víctor, Irusta, Silvia, Loaeza, David, Maspoch, Maria Lluisa, Santana, Orlando, Müller Sánchez, Alejandro Jesús
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/53698
Acceso en línea:http://hdl.handle.net/10810/53698
Access Level:acceso abierto
Palabra clave:recycled opaque PET
reactive extrusion
chain extension
long-chain branching
id ES_abc0bfd2af15d257d82e0dfc1cd8dbb3
oai_identifier_str oai:addi.ehu.eus:10810/53698
network_acronym_str ES
network_name_str España
repository_id_str
spelling Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PETCandal Pazos, María VirginiaSafari, MaryamFernández San Martín, MercedesOtaegi Tena, ItziarMugica Iztueta, Miren AgurtzaneZubitur Soroa, María ManuelaGerrica-Echevarria, GonzaloSebastián, VíctorIrusta, SilviaLoaeza, DavidMaspoch, Maria LluisaSantana, OrlandoMüller Sánchez, Alejandro Jesúsrecycled opaque PETreactive extrusionchain extensionlong-chain branchingThe 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.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.MDPI2021202120212021info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/53698reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.mdpi.com/2073-4360/13/20/3531/htminfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/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/).oai:addi.ehu.eus:10810/536982026-06-18T09:23:17Z
dc.title.none.fl_str_mv Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
title Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
spellingShingle Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
Candal Pazos, María Virginia
recycled opaque PET
reactive extrusion
chain extension
long-chain branching
title_short Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
title_full Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
title_fullStr Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
title_full_unstemmed Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
title_sort Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET
dc.creator.none.fl_str_mv Candal Pazos, María Virginia
Safari, Maryam
Fernández San Martín, Mercedes
Otaegi Tena, Itziar
Mugica Iztueta, Miren Agurtzane
Zubitur Soroa, María Manuela
Gerrica-Echevarria, Gonzalo
Sebastián, Víctor
Irusta, Silvia
Loaeza, David
Maspoch, Maria Lluisa
Santana, Orlando
Müller Sánchez, Alejandro Jesús
author Candal Pazos, María Virginia
author_facet Candal Pazos, María Virginia
Safari, Maryam
Fernández San Martín, Mercedes
Otaegi Tena, Itziar
Mugica Iztueta, Miren Agurtzane
Zubitur Soroa, María Manuela
Gerrica-Echevarria, Gonzalo
Sebastián, Víctor
Irusta, Silvia
Loaeza, David
Maspoch, Maria Lluisa
Santana, Orlando
Müller Sánchez, Alejandro Jesús
author_role author
author2 Safari, Maryam
Fernández San Martín, Mercedes
Otaegi Tena, Itziar
Mugica Iztueta, Miren Agurtzane
Zubitur Soroa, María Manuela
Gerrica-Echevarria, Gonzalo
Sebastián, Víctor
Irusta, Silvia
Loaeza, David
Maspoch, Maria Lluisa
Santana, Orlando
Müller Sánchez, Alejandro Jesús
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv recycled opaque PET
reactive extrusion
chain extension
long-chain branching
topic recycled opaque PET
reactive extrusion
chain extension
long-chain branching
description 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.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/53698
url http://hdl.handle.net/10810/53698
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.mdpi.com/2073-4360/13/20/3531/htm
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869416296325578752
score 15.300724

Similares en LA Referencia