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Mechanical Recycling of Partially Bio-Based and Recycled Polyethylene Terephthalate Blends by Reactive Extrusion with Poly(styrene-co-glycidyl methacrylate)

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Mechanical Recycling of Partially Bio-Based and Recycled Polyethylene Terephthalate Blends by Reactive Extrusion with Poly(styrene-co-glycidyl methacrylate)

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dc.contributor.author Montava-Jorda, Sergi es_ES
dc.contributor.author Lascano-Aimacaña, Diego Sebastián es_ES
dc.contributor.author Quiles-Carrillo, Luis es_ES
dc.contributor.author Montanes, Nestor es_ES
dc.contributor.author Boronat, Teodomiro es_ES
dc.contributor.author Martínez Sanz, Antonio Vicente es_ES
dc.contributor.author Ferrándiz Bou, Santiago es_ES
dc.contributor.author Torres-Giner, Sergio es_ES
dc.date.accessioned 2021-02-19T04:33:29Z
dc.date.available 2021-02-19T04:33:29Z
dc.date.issued 2020-01-09 es_ES
dc.identifier.uri http://hdl.handle.net/10251/161843
dc.description.abstract [EN] In the present study, partially bio-based polyethylene terephthalate (bio-PET) was melt-mixed at 15-45 wt% with recycled polyethylene terephthalate (r-PET) obtained from remnants of the injection blowing process of contaminant-free food-use bottles. The resultant compounded materials were thereafter shaped into pieces by injection molding for characterization. Poly(styrene-co-glycidyl methacrylate) (PS-co-GMA) was added at 1-5 parts per hundred resin (phr) of polyester blend during the extrusion process to counteract the ductility and toughness reduction that occurred in the bio-PET pieces after the incorporation of r-PET. This random copolymer effectively acted as a chain extender in the polyester blend, resulting in injection-molded pieces with slightly higher mechanical resistance properties and nearly the same ductility and toughness than those of neat bio-PET. In particular, for the polyester blend containing 45 wt% of r-PET, elongation at break (epsilon(b)) increased from 10.8% to 378.8% after the addition of 5 phr of PS-co-GMA, while impact strength also improved from 1.84 kJm(-2) to 2.52 kJm(-2). The mechanical enhancement attained was related to the formation of branched and larger macromolecules by a mechanism of chain extension based on the reaction of the multiple glycidyl methacrylate (GMA) groups present in PS-co-GMA with the hydroxyl (-OH) and carboxyl (-COOH) terminal groups of both bio-PET and r-PET. Furthermore, all the polyester blend pieces showed thermal and dimensional stabilities similar to those of neat bio-PET, remaining stable up to more than 400 degrees C. Therefore, the use low contents of the tested multi-functional copolymer can successfully restore the properties of bio-based but non-biodegradable polyesters during melt reprocessing with their recycled petrochemical counterparts and an effective mechanical recycling is achieved. es_ES
dc.description.sponsorship This research work was funded by the Spanish Ministry of Science, Innovation, and Universities (MICIU) project numbers RTI2018-097249-B-C21 and MAT2017-84909-C2-2-R es_ES
dc.language Inglés es_ES
dc.publisher MDPI AG es_ES
dc.relation.ispartof Polymers es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Bio-PET es_ES
dc.subject R-PET es_ES
dc.subject Chain extenders es_ES
dc.subject Reactive extrusion es_ES
dc.subject Secondary recycling es_ES
dc.subject Food packaging es_ES
dc.subject.classification CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.subject.classification INGENIERIA DE LOS PROCESOS DE FABRICACION es_ES
dc.subject.classification TECNOLOGIA DE ALIMENTOS es_ES
dc.title Mechanical Recycling of Partially Bio-Based and Recycled Polyethylene Terephthalate Blends by Reactive Extrusion with Poly(styrene-co-glycidyl methacrylate) es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3390/polym12010174 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//IJCI-2016-29675/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-097249-B-C21/ES/ENVASE ACTIVO MULTICAPA TERMOCONFORMABLE DE ALTA BARRERA BASADO EN BIOECONOMIA CIRCULAR/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Ingeniería de Alimentos para el Desarrollo - Institut Universitari d'Enginyeria d'Aliments per al Desenvolupament es_ES
dc.description.bibliographicCitation Montava-Jorda, S.; Lascano-Aimacaña, DS.; Quiles-Carrillo, L.; Montanes, N.; Boronat, T.; Martínez Sanz, AV.; Ferrándiz Bou, S.... (2020). Mechanical Recycling of Partially Bio-Based and Recycled Polyethylene Terephthalate Blends by Reactive Extrusion with Poly(styrene-co-glycidyl methacrylate). Polymers. 12(1):1-20. https://doi.org/10.3390/polym12010174 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.3390/polym12010174 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 20 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 12 es_ES
dc.description.issue 1 es_ES
dc.identifier.eissn 2073-4360 es_ES
dc.identifier.pmid 31936575 es_ES
dc.identifier.pmcid PMC7023399 es_ES
dc.relation.pasarela S\400487 es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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