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Journal Articles IOP Conference Series: Materials Science and Engineering Year : 2014

Broadband dielectric spectroscopy of nanocomposites based on PVDF and expanded graphite

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Abstract

Nanocomposites based on poly (vinylidene fluoride) (PVDF) and expanded graphite (EG) were prepared by non-solvent precipitation from solution with different EG concentrations. Films were obtained by compression molding and their structural and dielectric properties studied. From Wide Angle X-ray Scattering (WAXS) experiments, it can be assessed that for all EG concentrations the -crystalline phase of PVDF is the predominant crystalline form. However, for composites with high nanoadditive content, higher than 3 wt.%, the -crystalline phase is also detected. Dielectric spectroscopy results showed that the nanocomposites present both high dielectric constant and electrical conductivity at low percolation threshold.
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hal-01115969 , version 1 (12-02-2015)

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Attribution - CC BY 4.0

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A Linares, J C Canalda, A Sanz, A Szymczyk, Z Rosłaniec, et al.. Broadband dielectric spectroscopy of nanocomposites based on PVDF and expanded graphite. IOP Conference Series: Materials Science and Engineering, 2014, 64, pp.012003. ⟨10.1088/1757-899X/64/1/012003⟩. ⟨hal-01115969⟩
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