Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors

Devulcanizing ground-tire rubber (GTR) properly requires the removal of the sulphur linkages that crosslink the polymer. The volatile sulphur compounds (VSCs) released during the process must be extracted from the reactor to avoid any chemical recombination, and the sulphur gas concentrations conven...

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Authors: Pérez Campos, Rafael, Fayos Fernández, José, Monzó Cabrera, Juan
Format: article
Status:Published version
Publication Date:2023
Country:España
Institution:Universidad Politécnica de Cartagena(UPCT)
Repository:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/12836
Online Access:http://hdl.handle.net/10317/12836
https://www.sciencedirect.com/science/article/pii/S0263224123013453?ssrnid=4543146&dgcid=SSRN_redirect_SD
Access Level:Open access
Keyword:Ground-tyre rubber
Microwave devulcanization
Sulphur gases
Dielectric properties
Electrochemical sensors
Teoría de la Señal y las Comunicaciones
2202.10 Radioondas y Microondas
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oai_identifier_str oai:repositorio.upct.es:10317/12836
network_acronym_str ES
network_name_str España
repository_id_str
spelling Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensorsPérez Campos, RafaelFayos Fernández, JoséMonzó Cabrera, JuanGround-tyre rubberMicrowave devulcanizationSulphur gasesDielectric propertiesElectrochemical sensorsTeoría de la Señal y las Comunicaciones2202.10 Radioondas y MicroondasDevulcanizing ground-tire rubber (GTR) properly requires the removal of the sulphur linkages that crosslink the polymer. The volatile sulphur compounds (VSCs) released during the process must be extracted from the reactor to avoid any chemical recombination, and the sulphur gas concentrations conveniently sensed during the extraction, along with a thermal sensoring of the payload, can be used to monitor the whole devulcanization process. In this contribution, a modified conventional microwave oven was used to devulcanize the GTR. The microwave-processed GTR was evaluated by determining the values of its mass loss (ML), soluble fraction (sol fraction), and the variation of its electric permittivity. Results show a direct relationship between the energy delivered, sol fraction, the VSCs concentrations, the ML, and the permittivity values. Thus, this paper demonstrates that monitoring the VSCs can provide a reliable indication of ML and, consequently, devulcanization evolution even at non-uniform temperature conditions.ElsevierElectromangetismo y Materia202320232023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/12836https://www.sciencedirect.com/science/article/pii/S0263224123013453?ssrnid=4543146&dgcid=SSRN_redirect_SDreponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)Ingléshttps://www.sciencedirect.com/science/article/pii/S0263224123013453Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/128362026-05-15T06:39:02Z
dc.title.none.fl_str_mv Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
title Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
spellingShingle Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
Pérez Campos, Rafael
Ground-tyre rubber
Microwave devulcanization
Sulphur gases
Dielectric properties
Electrochemical sensors
Teoría de la Señal y las Comunicaciones
2202.10 Radioondas y Microondas
title_short Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
title_full Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
title_fullStr Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
title_full_unstemmed Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
title_sort Real-time monitoring of ground-tire rubber microwave devulcanization with thermal and electrochemical sensors
dc.creator.none.fl_str_mv Pérez Campos, Rafael
Fayos Fernández, José
Monzó Cabrera, Juan
author Pérez Campos, Rafael
author_facet Pérez Campos, Rafael
Fayos Fernández, José
Monzó Cabrera, Juan
author_role author
author2 Fayos Fernández, José
Monzó Cabrera, Juan
author2_role author
author
dc.contributor.none.fl_str_mv Electromangetismo y Materia
dc.subject.none.fl_str_mv Ground-tyre rubber
Microwave devulcanization
Sulphur gases
Dielectric properties
Electrochemical sensors
Teoría de la Señal y las Comunicaciones
2202.10 Radioondas y Microondas
topic Ground-tyre rubber
Microwave devulcanization
Sulphur gases
Dielectric properties
Electrochemical sensors
Teoría de la Señal y las Comunicaciones
2202.10 Radioondas y Microondas
description Devulcanizing ground-tire rubber (GTR) properly requires the removal of the sulphur linkages that crosslink the polymer. The volatile sulphur compounds (VSCs) released during the process must be extracted from the reactor to avoid any chemical recombination, and the sulphur gas concentrations conveniently sensed during the extraction, along with a thermal sensoring of the payload, can be used to monitor the whole devulcanization process. In this contribution, a modified conventional microwave oven was used to devulcanize the GTR. The microwave-processed GTR was evaluated by determining the values of its mass loss (ML), soluble fraction (sol fraction), and the variation of its electric permittivity. Results show a direct relationship between the energy delivered, sol fraction, the VSCs concentrations, the ML, and the permittivity values. Thus, this paper demonstrates that monitoring the VSCs can provide a reliable indication of ML and, consequently, devulcanization evolution even at non-uniform temperature conditions.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/12836
https://www.sciencedirect.com/science/article/pii/S0263224123013453?ssrnid=4543146&dgcid=SSRN_redirect_SD
url http://hdl.handle.net/10317/12836
https://www.sciencedirect.com/science/article/pii/S0263224123013453?ssrnid=4543146&dgcid=SSRN_redirect_SD
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S0263224123013453
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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