Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering
| dc.contributor.author | Lambri, Osvaldo Agustín | |
| dc.contributor.author | Giordano, E. D. | |
| dc.contributor.author | Bonifacich, Federico Guillermo | |
| dc.contributor.author | Pérez de Landazábal Berganzo, José Ignacio | |
| dc.contributor.author | Recarte Callado, Vicente | |
| dc.contributor.department | Física | es_ES |
| dc.contributor.department | Fisika | eu |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | es |
| dc.date.accessioned | 2020-11-18T09:18:30Z | |
| dc.date.available | 2020-11-18T09:18:30Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | 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. | en |
| dc.description.sponsorship | 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. | en |
| dc.format.extent | 10 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1590/s1517-707620180002.0415 | |
| dc.identifier.issn | 1517-7076 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/38717 | |
| dc.language.iso | eng | en |
| dc.publisher | Rede Latino-Americana de Materiais | en |
| dc.relation.ispartof | Matéria, 2018, 23(2): e-12079 | en |
| dc.relation.publisherversion | https://doi.org/10.1590/s1517-707620180002.0415 | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | EPDM | en |
| dc.subject | Inelastic neutron scattering | en |
| dc.subject | Infrared absorption spectroscopy | en |
| dc.subject | Crystallinity | en |
| dc.subject | Ageing | en |
| dc.title | Changes in the crystalline degree in neutron irradiated EPDM viewed through infrared spectroscopy and inelastic neutron scattering | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
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