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Electrical conductivity properties of expanded graphite polycarbonatediol polyurethane composites

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Electrical conductivity properties of expanded graphite polycarbonatediol polyurethane composites

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dc.contributor.author Redondo Foj, María Belén es_ES
dc.contributor.author Ortiz Serna, Mª Pilar es_ES
dc.contributor.author Carsí Rosique, Marta es_ES
dc.contributor.author Sanchis Sánchez, María Jesús es_ES
dc.contributor.author Culebras, Mario es_ES
dc.contributor.author Gómez, Clara María es_ES
dc.contributor.author Cantarero, Andrés es_ES
dc.date.accessioned 2017-02-06T11:57:24Z
dc.date.available 2017-02-06T11:57:24Z
dc.date.issued 2015-02
dc.identifier.issn 0959-8103
dc.identifier.uri http://hdl.handle.net/10251/77666
dc.description.abstract Conductive polymer composites of segmented polycarbonatediol polyurethane and expanded graphite (EG) have been synthesized with different amounts of EG conductive filler (from 0 to 50wt%). SEM, X-ray diffraction measurements, Fourier transform infrared and Raman spectroscopies demonstrated a homogeneous dispersion of the EG filler in the matrix. The dielectric permittivity of the composites showed an insulator to conductor percolation transition with increase in EG content. Significant changes in the dielectric permittivity take place when the weight fraction of EG is in the range 20-30wt%. Special attention has been paid to the dependence of the conductivity on frequency, temperature and EG content. The addition of EG to the matrix causes a dramatic increase in the electrical conductivity of 10 orders of magnitude, which is an indication of percolative behavior. A percolation threshold of ca 30wt% was evaluated by using the scaling law of percolation theory es_ES
dc.description.sponsorship This work was financially supported by the DGCYT through Grant MAT2012-33483. en_EN
dc.language Inglés es_ES
dc.publisher Wiley es_ES
dc.relation DGCYT MAT2012-33483 es_ES
dc.relation.ispartof Polymer International es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Electrical conductivity es_ES
dc.subject Polyurethane es_ES
dc.subject Expanded graphite es_ES
dc.subject Broadband dielectric spectroscopy es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification TERMODINAMICA APLICADA (UPV) es_ES
dc.title Electrical conductivity properties of expanded graphite polycarbonatediol polyurethane composites es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1002/pi.4788
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.description.bibliographicCitation Redondo Foj, MB.; Ortiz Serna, MP.; Carsí Rosique, M.; Sanchis Sánchez, MJ.; Culebras, M.; Gómez, CM.; Cantarero, A. (2015). Electrical conductivity properties of expanded graphite polycarbonatediol polyurethane composites. Polymer International. 64(2):284-292. doi:10.1002/pi.4788 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi. org/10.1002/pi.4788 es_ES
dc.description.upvformatpinicio 284 es_ES
dc.description.upvformatpfin 292 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 64 es_ES
dc.description.issue 2 es_ES
dc.relation.senia 272153 es_ES
dc.identifier.eissn 1097-0126


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