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Proceedings Paper

Electromechanically active polymer blends for actuation
Author(s): Ji Su; Zoubeida Ounaies; Joycelyn S. Harrison; Yoseph Bar-Cohen; Sean P. Leary
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Paper Abstract

Actuator mechanisms that are lightweight, durable, and efficient are needed to support telerobotic requirements, for future NASA missions. In this work, we present a series of electromechanically active polymer blends that can potentially be used as actuators for a variety of applications. This polymer blend combines an electrostrictive graft-elastomer with a ferroelectric poly (vinylidene fluoride-trifluoroethylene) polymer. Mechanical and piezoelectric properties of the blends as a function of temperature, frequency and relative composition of the two constituents in the blends have been studied. Electric field induced strain response of the blend films has also been studied as a function of the relative composition. A bending actuator device was developed incorporating the use of the polymer blend materials. The results and the possible effects of the combination of piezoelectricity and electrostriction in a material system are presented and discussed. This type of analysis may enable the design of blend compositions with optimal strain, mechanical, and dielectric properties for specific actuator applications.

Paper Details

Date Published: 7 June 2000
PDF: 8 pages
Proc. SPIE 3987, Smart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD), (7 June 2000); doi: 10.1117/12.387764
Show Author Affiliations
Ji Su, NASA Langley Research Ctr. (United States)
Zoubeida Ounaies, NASA Langley Research Ctr. (United States)
Joycelyn S. Harrison, ICASE (United States)
Yoseph Bar-Cohen, Jet Propulsion Lab. (United States)
Sean P. Leary, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3987:
Smart Structures and Materials 2000: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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