Upcycling opaque PET by reactive extrusion

This work was performed as a part of the project RevalPET UP, a project aiming to find new ways of recycling opaque polyethylene terephthalate waste (rPET-O) into a new primary material. Recently, white opaque PET has been used as a material for milk bottles in France. The bottles contain up to 15%...

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Detalles Bibliográficos
Autor: Hacksell, Eric
Tipo de recurso: tesis de maestría
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/345989
Acceso en línea:https://hdl.handle.net/2117/345989
Access Level:acceso abierto
Palabra clave:Politereftalat d'etilè
PET
Polietilè -- Reciclatge
Polímers -- Reciclatge
Àrees temàtiques de la UPC::Enginyeria dels materials
id ES_710da03e271f7f65eb0168d1dbaf5237
oai_identifier_str oai:upcommons.upc.edu:2117/345989
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Upcycling opaque PET by reactive extrusion
title Upcycling opaque PET by reactive extrusion
spellingShingle Upcycling opaque PET by reactive extrusion
Hacksell, Eric
Politereftalat d'etilè
PET
Polietilè -- Reciclatge
Polímers -- Reciclatge
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Upcycling opaque PET by reactive extrusion
title_full Upcycling opaque PET by reactive extrusion
title_fullStr Upcycling opaque PET by reactive extrusion
title_full_unstemmed Upcycling opaque PET by reactive extrusion
title_sort Upcycling opaque PET by reactive extrusion
dc.creator.none.fl_str_mv Hacksell, Eric
author Hacksell, Eric
author_facet Hacksell, Eric
author_role author
dc.contributor.none.fl_str_mv Cailloux, Jonathan
Santana Pérez, Orlando Onofre
dc.subject.none.fl_str_mv Politereftalat d'etilè
PET
Polietilè -- Reciclatge
Polímers -- Reciclatge
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Politereftalat d'etilè
PET
Polietilè -- Reciclatge
Polímers -- Reciclatge
Àrees temàtiques de la UPC::Enginyeria dels materials
description This work was performed as a part of the project RevalPET UP, a project aiming to find new ways of recycling opaque polyethylene terephthalate waste (rPET-O) into a new primary material. Recently, white opaque PET has been used as a material for milk bottles in France. The bottles contain up to 15% titanium dioxide (TiO2) nanoparticles, protecting the milk from UV degradation and gas permeation into the bottle. However, the presence of this material disrupts the recycling flow as it removes the transparency should it be mixed with transparent PET as well as its mechanical properties being insufficient to become a new primary material on its own. Reactive extrusion with a chain extender agent can be used to improve the properties of this material. In this work, the reactive extrusion of rPET-O with the multifunctional epoxydic oligomer Joncryl ADR 4400 was investigated at 0, 1 and 1.5wt%. The rotation speed of the screws for the twin-screw extruder were also varied between 40rpm and 80rpm. It was found that the intrinsic viscosity increased the most for 1wt% addition of chain extender, while the rotation speed did not matter for this property. The melting temperature and crystallisation temperature was slightly decreased after reactive extrusion but did not change with Joncryl concentration nor with different screw rotation speeds. The complex viscosity and storage modulus were the highest for 1wt% Joncryl and a rotation speed of 40rpm, indicating that these conditions made the chain externder and the rPET-O react the most. The elongation at break increased the most with 1wt% addition of Joncryl, as the material gained the ability to strain harden after necking. The addition of 1.5wt% Joncryl chain extender made the material brittle.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-02-11
2021
2021-05-21
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/345989
url https://hdl.handle.net/2117/345989
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Upcycling opaque PET by reactive extrusionHacksell, EricPolitereftalat d'etilèPETPolietilè -- ReciclatgePolímers -- ReciclatgeÀrees temàtiques de la UPC::Enginyeria dels materialsThis work was performed as a part of the project RevalPET UP, a project aiming to find new ways of recycling opaque polyethylene terephthalate waste (rPET-O) into a new primary material. Recently, white opaque PET has been used as a material for milk bottles in France. The bottles contain up to 15% titanium dioxide (TiO2) nanoparticles, protecting the milk from UV degradation and gas permeation into the bottle. However, the presence of this material disrupts the recycling flow as it removes the transparency should it be mixed with transparent PET as well as its mechanical properties being insufficient to become a new primary material on its own. Reactive extrusion with a chain extender agent can be used to improve the properties of this material. In this work, the reactive extrusion of rPET-O with the multifunctional epoxydic oligomer Joncryl ADR 4400 was investigated at 0, 1 and 1.5wt%. The rotation speed of the screws for the twin-screw extruder were also varied between 40rpm and 80rpm. It was found that the intrinsic viscosity increased the most for 1wt% addition of chain extender, while the rotation speed did not matter for this property. The melting temperature and crystallisation temperature was slightly decreased after reactive extrusion but did not change with Joncryl concentration nor with different screw rotation speeds. The complex viscosity and storage modulus were the highest for 1wt% Joncryl and a rotation speed of 40rpm, indicating that these conditions made the chain externder and the rPET-O react the most. The elongation at break increased the most with 1wt% addition of Joncryl, as the material gained the ability to strain harden after necking. The addition of 1.5wt% Joncryl chain extender made the material brittle.Este trabajo se realizó en el marco del proyecto RevalPET UP, cuyo objetivo es encontrar nuevas formas de reciclar los residuos de tereftalato de polietileno opaco (rPET-O) para convertirlos en uno nuevo material primario. Recientemente, el PET blanco opaco se ha utilizado como material para las botellas de leche en Francia. Las botellas contienen hasta un 15% de nanopartículas de dióxido de titanio (TiO2), que protegen la leche de la degradación por los rayos UV y de la permeación de gases en la botella. Sin embargo, la presencia de este material perturba el flujo de reciclaje, ya que elimina la transparencia en caso de que se mezcle con el PET transparente, además de que sus propiedades mecánicas son insuficientes para convertirse en un nuevo material primario por sí solo. La extrusión reactiva con un agente extensor de cadena puede utilizarse para mejorar las propiedades de este material. En este trabajo se investigó la extrusión reactiva de rPET-O con el oligómero epoxídico multifuncional Joncryl ADR 4400 al 0, 1 y 1,5wt%. También se varió la velocidad de rotación de los tornillos de la extrusora de doble tornillo entre 40rpm y 80rpm. Se comprobó que la viscosidad intrínseca aumentaba al máximo con la adición de 1wt% de extensor de cadena, mientras que la velocidad de rotación no era importante para esta propiedad. La temperatura de fusión y la temperatura de cristalización disminuyeron ligeramente tras la extrusión reactiva, pero no cambiaron con la concentración de Joncryl ni con las diferentes velocidades de rotación del tornillo. La viscosidad compleja y el módulo de almacenamiento fueron los más elevados para el 1wt% de Joncryl y una velocidad de rotación de 40rpm, lo que indica que estas condiciones hicieron reaccionar más al extensor de cadena y al rPET-O. El alargamiento a la rotura fue el que más aumentó con la adición de 1wt% de Joncryl, ya que el material adquirió la capacidad de endurecerse por deformación tras el cuelgue. La adición de 1,5wt% de extensor de cadena Joncryl hizo que el material se volviera frágil.Universitat Politècnica de CatalunyaCailloux, JonathanSantana Pérez, Orlando Onofre20212021-02-1120212021-05-21master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2117/345989reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3459892026-05-27T15:37:01Z
score 15,300724

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