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Electroactive influence of ferroelectric nanofillers on polyamide 11 matrix properties

Abstract : Barium titanate ceramic powders have been incorporated in polyamide 11 to form homogeneous dispersion of particles in the matrix. Barium titanate/polyamide 11 nanocomposites have been synthesized using a solvent casting method with ultrasonic stirring to homogeneously disperse inclusions in the matrix. Composites with volume fraction of barium titanate / ranging from 0.01 to 0.4 were elaborated. Films were fabricated using a hot press method. Only the inclusions were poled in the matrix to form a ferroelectric particles/ unpoled matrix composite. Interactions between the particles and the matrix, pyroelectric and piezoelectric response were studied as a function of / by dynamic dielectric spectroscopy. Composites show interesting pyro-piezoelectric activity. Pyroelectric merit factor increases linearly and it reaches a limit value of 0.3 for a volume fraction / = 0.1.
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Jean-Fabien Capsal, Eric Dantras, Jany Dandurand, Colette Lacabanne. Electroactive influence of ferroelectric nanofillers on polyamide 11 matrix properties. Journal of Non-Crystalline Solids, Elsevier, 2007, vol. 353, pp. 4437-4442. ⟨10.1016/j.jnoncrysol.2007.01.097⟩. ⟨hal-00808434⟩



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