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Article Dans Une Revue Scientific Reports Année : 2015

ALL-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications

Résumé

This paper focuses on the improvement of a relaxor ferroelectric terpolymer, i.e., poly (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE)], filled with a bis(2-ethylhexyl) phthalate (DEHP). The developed material gave rise to a significantly increased longitudinal electrostrictive strain, as well as an increased mechanical energy density under a relatively low electric field. These features were attributed to the considerably enhanced dielectric permittivity and a decreased Young modulus as a result of the introduction of only small DEHP plasticizer molecules. In addition, the plasticizer-filled terpolymer only exhibited a slight decrease of the dielectric breakdown strength, which was a great advantage with respect to the traditional polymer-based electrostrictive composites. More importantly, the approach proposed herein is promising for the future development and scale-up of new high-performance electrostrictive dielectrics under low applied electrical fields through modification simply by blending with a low-cost plasticizer. An experimental demonstration based on a flexible micro-fluidic application is described at the end of this paper, confirming the attractive characteristics of the proposed materials as well as the feasibility of integrating them as micro-actuators in small-scale devices.

Dates et versions

hal-01489396 , version 1 (14-03-2017)

Identifiants

Citer

Minh-Quyen Le, J. Capsal, Jérémy Galineau, F. Ganet, Y. Xunquian, et al.. ALL-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications. Scientific Reports, 2015, 5, pp.11814. ⟨10.1038/srep11814⟩. ⟨hal-01489396⟩
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