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Article Dans Une Revue Journal of Physics D: Applied Physics Année : 2009

Enhanced electroactive properties of polyurethane films loaded with carbon-coated SiC nanowires

B. Guiffard
  • Fonction : Auteur
D. Guyomar
  • Fonction : Auteur
L. Seveyrat
Y. Chowanek
  • Fonction : Auteur
Mikhael Bechelany
David Cornu
Philippe Miele

Résumé

Polyurethane-based nanocomposite films were prepared by incorporating carbon-coated SiC nanowires (SiC@C) into the polymer matrix. Electric field-induced strain measurements revealed that a loading of 0.5 wt% SiC@C increased the strain level by a factor of 1.7 at a moderate field strength (6.5V mu m(-1)). Current-electric field characteristics and the film thickness dependence of strain demonstrated that the improvement of the electromechanical response was linked to a more pronounced space charge effect in the nanocomposite than in the polymer host. DSC measurements revealed that the level of phase mixing in the PU matrix remained unchanged after SiC@C filling; hence, the nano-objects themselves acted as charge traps.

Domaines

Matériaux

Dates et versions

hal-00425223 , version 1 (20-10-2009)

Identifiants

Citer

B. Guiffard, D. Guyomar, L. Seveyrat, Y. Chowanek, Mikhael Bechelany, et al.. Enhanced electroactive properties of polyurethane films loaded with carbon-coated SiC nanowires. Journal of Physics D: Applied Physics, 2009, 42 (5), pp.055503. ⟨10.1088/0022-3727/42/5/055503⟩. ⟨hal-00425223⟩
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