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dc.contributor.author | Badia, J. D.![]() |
es_ES |
dc.contributor.author | TERUEL JUANES, ROBERTO![]() |
es_ES |
dc.contributor.author | Echegoyen, Y.![]() |
es_ES |
dc.contributor.author | Torres-Giner, S.![]() |
es_ES |
dc.contributor.author | Lagarón, J. M.![]() |
es_ES |
dc.contributor.author | Ribes-Greus, A.![]() |
es_ES |
dc.date.accessioned | 2022-01-28T07:41:35Z | |
dc.date.available | 2022-01-28T07:41:35Z | |
dc.date.issued | 2021-01 | es_ES |
dc.identifier.issn | 0141-3910 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/180341 | |
dc.description.abstract | [EN] The influence of the addition of graphene nanoplatelets (GNPs) on the intra/inter ¿ molecular segmental motions of poly(ethylene-co-vinyl alcohol) (EVOH) was assessed by means of dielectric thermal analysis (DETA). The relaxation spectra were studied in terms of the dielectric permittivity (¿¿) and the dielectric loss tangent (tan ¿) at wide ranges of frequency (from 10¿2 to 107 Hz) and temperature (from -150 to 140 °C). Two relaxation zones were disthinguished. Below the glass transition temperature (Tg), two ß-relaxations were observed, which are characteristic local modes of mobility of the EVOH side groups, and related to the influence of the different surroundings of ethylene or vinyl alcohol units. At higher temperatures, the dielectric ¿-relaxation in the vicinities of the glass transition of EVOH was determined. The thermal activation of the ß-relaxations was explained by an Arrhenius model, and showed activation energies (Ea) around 55 and 80 kJ·mol¿1. The ¿-relaxation was explained by the Vogel-Fulcher-Tammann-Hesse (VFTH) model. The study of the segmental dynamics showed an increase in the dynamic fragility parameters with the addition of GNPs. The permittivity was increased at preferential concentrations of GNPs. In particular, the addition of GNPs up to 0.5 wt% increased the dielectric permittivity of the electrospun EVOH/GNPs nanocomposite fibers, specially at low frequencies. | es_ES |
dc.description.sponsorship | The authors would like to thank the European Regional Development Funds (ERDF) and the Spanish Ministry of Science, Innovation, and Universities (MICIU) for the concession of the Research Projects ENE2017-86711-C3-1-R and RTI2018-097249-B-C21. The UPV authors would also like to thank the Chilean Economic Development Agency (CORFO) the economic support in the frame of the project 13CEI2-21839. This research was also funded by the EU H2020 YPACK (773872) and USABLE (BBI-JTI-2018-836884) projects. Torres-Giner is a recipient of a Juan de la Cierva-Incorporación contract (IJCI-2016-29675) from MICIU. Universitat Politècnica de València is acknowledged for the post-doctoral aid for R. Teruel-Juanes, under the PAID-10-19 SUB.1 SP20190049 scholarship. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Polymer Degradation and Stability | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Poly(ethylene-co-vinyl alcohol) EVOH | es_ES |
dc.subject | Graphene nanoplatelets GNPs | es_ES |
dc.subject | Polymer nanocomposites | es_ES |
dc.subject | Dielectric permittivity | es_ES |
dc.subject | Segmental cooperativity | es_ES |
dc.subject | Dynamic fragility | es_ES |
dc.subject.classification | TECNOLOGIA DE ALIMENTOS | es_ES |
dc.subject.classification | MAQUINAS Y MOTORES TERMICOS | es_ES |
dc.title | Effect of graphene nanoplatelets on the dielectric permittivity and segmental motions of electrospun poly(ethylene-co-vinyl alcohol) nanofibers | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.polymdegradstab.2020.109404 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-86711-C3-1-R/ES/SISTEMA INTEGRADO DE DESCARBONIZACION Y PRODUCCION DE ENERGIA BASADO EN PILAS DE COMBUSTIBLE DE METANOL DIRECTO PARA APLICACIONES NAVALES Y AEROESPACIALES/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/UPV//PAID-10-19//Mejora de prestaciones del páncreas artificial ante ingestas y ejercicio mediante observadores de perturbaciones y técnicas de compensación de retardos/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-097249-B-C21/ES/ENVASE ACTIVO MULTICAPA TERMOCONFORMABLE DE ALTA BARRERA BASADO EN BIOECONOMIA CIRCULAR/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/UPV//SP20190049/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/773872/EU/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/Agencia Estatal de Investigación//IJCI-2016-29675//AYUDA CONTRATO JUAN DE LA CIERVA-INCORPORACION-TORRES GINER/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/836884/EU/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/CORPORACION DE FOMENTO DE LA PRODUCCION, CORFO//LEITAT. 13CEI2-21839//CENTRO DE EXCELENCIA EN NANOFIBRAS LEITAT CHILE (CEN LEITAT-CHILE)/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario de Ingeniería de Alimentos para el Desarrollo - Institut Universitari d'Enginyeria d'Aliments per al Desenvolupament | es_ES |
dc.description.bibliographicCitation | Badia, JD.; Teruel Juanes, R.; Echegoyen, Y.; Torres-Giner, S.; Lagarón, JM.; Ribes-Greus, A. (2021). Effect of graphene nanoplatelets on the dielectric permittivity and segmental motions of electrospun poly(ethylene-co-vinyl alcohol) nanofibers. Polymer Degradation and Stability. 183:1-9. https://doi.org/10.1016/j.polymdegradstab.2020.109404 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.polymdegradstab.2020.109404 | es_ES |
dc.description.upvformatpinicio | 1 | es_ES |
dc.description.upvformatpfin | 9 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 183 | es_ES |
dc.relation.pasarela | S\427242 | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | AGENCIA ESTATAL DE INVESTIGACION | es_ES |
dc.contributor.funder | Agencia Estatal de Investigación | es_ES |
dc.contributor.funder | European Regional Development Fund | es_ES |
dc.contributor.funder | Universitat Politècnica de València | es_ES |
dc.contributor.funder | CORPORACION DE FOMENTO DE LA PRODUCCION, CORFO | es_ES |