Tensile and elastocaloric properties of natural/devulcanized waste rubber blends

The need for eco-friendly cooling materials and material recycling are two urgent challenges to address. In this paper, the role of the ground tyre rubber treatment (cryo-grinding and devulcanization) is investigated on the tensile and elastocaloric properties of Natural rubber (NR)/ ground tyre rub...

ver descrição completa

Detalhes bibliográficos
Autores: Lewandowski, A., Candau, Nicolas|||0000-0002-1559-8696, Maspoch Rulduà, M. Lluïsa|||0000-0002-4813-6412
Formato: artículo
Fecha de publicación:2024
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/423221
Acesso em linha:https://hdl.handle.net/2117/423221
https://dx.doi.org/10.1002/marc.202400422
Access Level:acceso abierto
Palavra-chave:Devulcanization
Elastocaloric rubber
Grinding
Mechanical properties
Waste rubber
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
id ES_799d301c43965a27446ccc19cffa5008
oai_identifier_str oai:upcommons.upc.edu:2117/423221
network_acronym_str ES
network_name_str España
repository_id_str
spelling Tensile and elastocaloric properties of natural/devulcanized waste rubber blendsLewandowski, A.Candau, Nicolas|||0000-0002-1559-8696Maspoch Rulduà, M. Lluïsa|||0000-0002-4813-6412DevulcanizationElastocaloric rubberGrindingMechanical propertiesWaste rubberÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímersThe need for eco-friendly cooling materials and material recycling are two urgent challenges to address. In this paper, the role of the ground tyre rubber treatment (cryo-grinding and devulcanization) is investigated on the tensile and elastocaloric properties of Natural rubber (NR)/ ground tyre rubber (GTR). The GTR particles that are sieved (<63µm) and devulcanized by microwave irradiation (1 min at 800Watts) exhibit a low network chain density (0.53 × 10-4 mol.cm-3) resulting from crosslinks breakage and rubber chains scission, as supported by FTIR showing a decrease of S-S, C-S, and C-C bonds. The NR/GTR blends show a high elastocaloric effect as compared to the pristine NR, which can be ascribed to the high content of carbon black in the GTR (52 wt.%) and also the high level of devulcanization of the GTR. NR/GTR blends reach a heating of +8 °C and a cooling of >-6 °C, resulting in a material's coefficient of performance COPmat = 2.8-3 compared to 2.6 for the pristine NR. The concomitant effect of cryogrinding and microwave devulcanization is proposed as a way to improve the tensile and elastocaloric properties of natural rubber/waste rubber blends for their possible integration into elastocaloric devices for heating/cooling applications.20242024-11-0120252025-02-03journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/423221https://dx.doi.org/10.1002/marc.202400422reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4232212026-05-27T15:37:01Z
dc.title.none.fl_str_mv Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
title Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
spellingShingle Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
Lewandowski, A.
Devulcanization
Elastocaloric rubber
Grinding
Mechanical properties
Waste rubber
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
title_short Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
title_full Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
title_fullStr Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
title_full_unstemmed Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
title_sort Tensile and elastocaloric properties of natural/devulcanized waste rubber blends
dc.creator.none.fl_str_mv Lewandowski, A.
Candau, Nicolas|||0000-0002-1559-8696
Maspoch Rulduà, M. Lluïsa|||0000-0002-4813-6412
author Lewandowski, A.
author_facet Lewandowski, A.
Candau, Nicolas|||0000-0002-1559-8696
Maspoch Rulduà, M. Lluïsa|||0000-0002-4813-6412
author_role author
author2 Candau, Nicolas|||0000-0002-1559-8696
Maspoch Rulduà, M. Lluïsa|||0000-0002-4813-6412
author2_role author
author
dc.subject.none.fl_str_mv Devulcanization
Elastocaloric rubber
Grinding
Mechanical properties
Waste rubber
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
topic Devulcanization
Elastocaloric rubber
Grinding
Mechanical properties
Waste rubber
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
description The need for eco-friendly cooling materials and material recycling are two urgent challenges to address. In this paper, the role of the ground tyre rubber treatment (cryo-grinding and devulcanization) is investigated on the tensile and elastocaloric properties of Natural rubber (NR)/ ground tyre rubber (GTR). The GTR particles that are sieved (<63µm) and devulcanized by microwave irradiation (1 min at 800Watts) exhibit a low network chain density (0.53 × 10-4 mol.cm-3) resulting from crosslinks breakage and rubber chains scission, as supported by FTIR showing a decrease of S-S, C-S, and C-C bonds. The NR/GTR blends show a high elastocaloric effect as compared to the pristine NR, which can be ascribed to the high content of carbon black in the GTR (52 wt.%) and also the high level of devulcanization of the GTR. NR/GTR blends reach a heating of +8 °C and a cooling of >-6 °C, resulting in a material's coefficient of performance COPmat = 2.8-3 compared to 2.6 for the pristine NR. The concomitant effect of cryogrinding and microwave devulcanization is proposed as a way to improve the tensile and elastocaloric properties of natural rubber/waste rubber blends for their possible integration into elastocaloric devices for heating/cooling applications.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-11-01
2025
2025-02-03
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/423221
https://dx.doi.org/10.1002/marc.202400422
url https://hdl.handle.net/2117/423221
https://dx.doi.org/10.1002/marc.202400422
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-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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
_version_ 1869411362658058240
score 15.811543

Registos relacionados