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Kinetics of free-radical polymerization probed by dielectric relaxation spectroscopy under high conductivity conditions

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Kinetics of free-radical polymerization probed by dielectric relaxation spectroscopy under high conductivity conditions

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dc.contributor.author Viciosa, María Teresa es_ES
dc.contributor.author Dionisio, Madalena es_ES
dc.contributor.author Gómez Ribelles, José Luís es_ES
dc.date.accessioned 2016-05-17T09:10:35Z
dc.date.available 2016-05-17T09:10:35Z
dc.date.issued 2011-04-19
dc.identifier.issn 0032-3861
dc.identifier.uri http://hdl.handle.net/10251/64206
dc.description.abstract Polymerization kinetics of tri-ethylene glycol dimethacrylate (TrEGDMA)/2,2-azobis-isobutyronitrile (AIBN) mixtures (0.1% w.t.) at different temperatures was investigated by using dielectric relaxation spectroscopy. The dielectric spectra at the polymerization temperatures studied are dominated by high conductivity leading us to employ the electric modulus representation in order to extract information about the evolution of the system during isothermal reaction. An intense peak appears in the imaginary component of the complex dielectric modulus which is related to conductivity. The variation of the strength of this peak and of its relaxation time with the polymerization time allows us to determine the polymerization degree evolution and the moment in which vitrification is attained, which can be compared with results obtained by temperature modulated DSC in a previous work (Viciosa MT, Hoyo JQ Dionisio M, Gomez Ribelles JL Journal of Thermal Analysis and Calorimetry 2007; 90:407-414). es_ES
dc.description.sponsorship Fundacao para a Ciencia e Tecnologia by financial support, SFRH/BPD/3961/2007. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Polymer es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Electric modulus es_ES
dc.subject Free radical polymerization es_ES
dc.subject TrEGDMA es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Kinetics of free-radical polymerization probed by dielectric relaxation spectroscopy under high conductivity conditions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.polymer.2011.03.006
dc.relation.projectID info:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F3961%2F2007/ es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Centro de Biomateriales e Ingeniería Tisular - Centre de Biomaterials i Enginyeria Tissular es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.description.bibliographicCitation Viciosa, MT.; Dionisio, M.; Gómez Ribelles, JL. (2011). Kinetics of free-radical polymerization probed by dielectric relaxation spectroscopy under high conductivity conditions. Polymer. 52(9):1944-1953. doi:10.1016/j.polymer.2011.03.006 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.polymer.2011.03.006 es_ES
dc.description.upvformatpinicio 1944 es_ES
dc.description.upvformatpfin 1953 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 52 es_ES
dc.description.issue 9 es_ES
dc.relation.senia 212296 es_ES
dc.contributor.funder Fundação para a Ciência e a Tecnologia, Portugal es_ES


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