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Physical structure of P(VDF-TrFE)/barium titanate submicron composites

Abstract : Dynamic Dielectric Spectroscopy and Thermo Stimulated Current were used to investigate of the dielectric relaxation of hybrid Poly(vinylidene-fluoride-trifluoroethylene)/barium titanate 700 nm composites with 0-3 connectivity. The results obtained by this method allow us to describe the physical structure of these composites in the glassy state at a nanometric scale. The decrease of the activation enthalpies and activation entropies involved in the dynamics of the α relaxation is attributed to: the decrease of Cooperative Rearranging Region sizes and an increase of intra/inter macromolecular interactions in the amorphous phase with the volume fraction.
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https://hal.archives-ouvertes.fr/hal-00842361
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Jean-Fabien Capsal, Eric Dantras, Jany Dandurand, Colette Lacabanne. Physical structure of P(VDF-TrFE)/barium titanate submicron composites. Journal of Non-Crystalline Solids, Elsevier, 2011, vol. 358, pp. 794-798. ⟨10.1016/j.jnoncrysol.2011.12.028⟩. ⟨hal-00842361⟩

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