Electroactive influence of ferroelectric nanofillers on polyamide 11 matrix properties

Jean-Fabien Capsal (1) , Eric Dantras (1) , Jany Dandurand (1) , Colette Lacabanne (1)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

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.

Mots clés: Nanocomposites; Pyroelectric; Piezoelectric; Relaxation

Domaines: Matériaux

Jean-Fabien Capsal, Eric Dantras, Jany Dandurand, Colette Lacabanne. Electroactive influence of ferroelectric nanofillers on polyamide 11 matrix properties. Journal of Non-Crystalline Solids, 2007, vol. 353, pp. 4437-4442. ⟨10.1016/j.jnoncrysol.2007.01.097⟩. ⟨hal-00808434⟩