Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering

The changes in the degree of crystallinity in commercial Ethylene Propylene Diene rubber-type M (EPDM) irradiated with neutrons at different doses has been studied by means of inelastic neutron scattering and infrared absorption spectroscopy experiments. EPDM samples were taken from the housing of n...

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Autores: Lambri, Osvaldo Agustín, Giordano, E. D., Bonifacich, Federico Guillermo, Pérez de Landazábal Berganzo, José Ignacio, Recarte Callado, Vicente
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/38717
Acceso en línea:https://hdl.handle.net/2454/38717
Access Level:acceso abierto
Palabra clave:EPDM
Inelastic neutron scattering
Infrared absorption spectroscopy
Crystallinity
Ageing
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spelling Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scatteringLambri, Osvaldo AgustínGiordano, E. D.Bonifacich, Federico GuillermoPérez de Landazábal Berganzo, José IgnacioRecarte Callado, VicenteEPDMInelastic neutron scatteringInfrared absorption spectroscopyCrystallinityAgeingThe changes in the degree of crystallinity in commercial Ethylene Propylene Diene rubber-type M (EPDM) irradiated with neutrons at different doses has been studied by means of inelastic neutron scattering and infrared absorption spectroscopy experiments. EPDM samples were taken from the housing of non-ceramic electrical insulators which are used in outdoor transmission lines of 66 kV. Inelastic neutron scattering spectra were recorded at 5 K with an accessible energy-transfer range between 180 - 3500 cm-1. Infrared studies were performed at room temperature with an energy transfer between 4000 - 400 cm-1. Controlled neutron irradiation allows to obtain different volume fraction and size of crystalline zones in EPDM. The obtained results are discussed and correlated with studies of differential scanning calorimetry, dynamic mechanical analysis and positron annihilation lifetime spectroscopy from where the changes in crystallinity in EPDM were indirectly studied. Inelastic neutron scattering studies were not appropriate for determining the changes in the crystallinity degree in neutron irradiated commercial EPDM. In contrast, from infrared absorption spectroscopy the changes in crystallinity could be determined successfully.This work was partially supported by the CONICET-PIP No. 179CO, the PID-UNR ING 450 (2014-2017), the Cooperation Agreement between the Universidad del País Vasco/Euskal Herriko Unibertsitatea and the Universidad Nacional de Rosario, Res 3243/2015 and the Cooperation Agreement between the Universidad Pública de Navarra and the Universidad Nacional de Rosario, Res. 3247/2015.Rede Latino-Americana de MateriaisFísicaFisikaUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/38717reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésCreative Commons Attribution 4.0 International (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/387172026-06-17T12:41:47Z
dc.title.none.fl_str_mv Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
title Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
spellingShingle Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
Lambri, Osvaldo Agustín
EPDM
Inelastic neutron scattering
Infrared absorption spectroscopy
Crystallinity
Ageing
title_short Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
title_full Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
title_fullStr Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
title_full_unstemmed Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
title_sort Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
dc.creator.none.fl_str_mv Lambri, Osvaldo Agustín
Giordano, E. D.
Bonifacich, Federico Guillermo
Pérez de Landazábal Berganzo, José Ignacio
Recarte Callado, Vicente
author Lambri, Osvaldo Agustín
author_facet Lambri, Osvaldo Agustín
Giordano, E. D.
Bonifacich, Federico Guillermo
Pérez de Landazábal Berganzo, José Ignacio
Recarte Callado, Vicente
author_role author
author2 Giordano, E. D.
Bonifacich, Federico Guillermo
Pérez de Landazábal Berganzo, José Ignacio
Recarte Callado, Vicente
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Física
Fisika
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.subject.none.fl_str_mv EPDM
Inelastic neutron scattering
Infrared absorption spectroscopy
Crystallinity
Ageing
topic EPDM
Inelastic neutron scattering
Infrared absorption spectroscopy
Crystallinity
Ageing
description The changes in the degree of crystallinity in commercial Ethylene Propylene Diene rubber-type M (EPDM) irradiated with neutrons at different doses has been studied by means of inelastic neutron scattering and infrared absorption spectroscopy experiments. EPDM samples were taken from the housing of non-ceramic electrical insulators which are used in outdoor transmission lines of 66 kV. Inelastic neutron scattering spectra were recorded at 5 K with an accessible energy-transfer range between 180 - 3500 cm-1. Infrared studies were performed at room temperature with an energy transfer between 4000 - 400 cm-1. Controlled neutron irradiation allows to obtain different volume fraction and size of crystalline zones in EPDM. The obtained results are discussed and correlated with studies of differential scanning calorimetry, dynamic mechanical analysis and positron annihilation lifetime spectroscopy from where the changes in crystallinity in EPDM were indirectly studied. Inelastic neutron scattering studies were not appropriate for determining the changes in the crystallinity degree in neutron irradiated commercial EPDM. In contrast, from infrared absorption spectroscopy the changes in crystallinity could be determined successfully.
publishDate 2018
dc.date.none.fl_str_mv 2018
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 https://hdl.handle.net/2454/38717
url https://hdl.handle.net/2454/38717
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Creative Commons Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Creative Commons Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Rede Latino-Americana de Materiais
publisher.none.fl_str_mv Rede Latino-Americana de Materiais
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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