171285 20260520092808.0 doi 10.1016/j.compscitech.2017.09.016 sideral 101878 ART-2017-101878 eng Puértolas, J.A. Universidad de Zaragoza (orcid)0000-0002-3125-5802 Dielectric behavior and electrical conductivity of PVDF filled with functionalized single-walled carbon nanotubes 2017 Polyvinylidene fluoride (PVDF)/single-walled carbon nanotube (SWCNT) composites are characterized by X-ray diffraction and scanning calorimetry, and studied by dielectric relaxation spectroscopy (DRS) in the temperature range of -75 to 150 °C. The effects of SWCNTs and SWCNT functionalization are analyzed in terms of a and ac relaxation, dielectric permittivity, loss tangent, and AC electrical conductivity. Some small changes are detected in a relaxation with the addition of SWCNTs, and a strong influence of SWCNTs is observed in the other relaxation ac. Below the percolation threshold, the dielectric permittivity of functionalized SWCNT composites increases compared to blank PVDF, without notable changes in the dielectric loss. All the composite systems show an electrical percolation behavior with different thresholds depending on SWCNT functionalization. Threshold concentrations remain nearly unchanged in the whole temperature and frequency ranges. The base PVDF conductivity strongly depends on temperature and frequency, while the maximum conductivity above the percolation remains nearly unchanged (~10-2 S/m) for all the systems, temperatures and frequencies. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 5.16 2017 MATERIALS SCIENCE, COMPOSITES 1 / 26 = 0.038 2017 Q1 T1 1.702 2017 Engineering (miscellaneous) 2017 Q1 Ceramics and Composites 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion García-García, J.F. Pascual, F.J. Universidad de Zaragoza (orcid)0000-0002-4502-7990 González-Domínguez, J.M. Martínez, M.T. Ansón-Casaos, A. (orcid)0000-0002-3134-8566 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 152 (2017), 263-274 Compos. sci. technol. COMPOSITES SCIENCE AND TECHNOLOGY 0266-3538 1747985 http://zaguan.unizar.es/record/171285/files/texto_completo.pdf Postprint 747729 http://zaguan.unizar.es/record/171285/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:171285 articulos driver 2026-05-20-08:31:30 ARTICLE