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16 July 2001 Electrostrictive and ferroelectric properties of P(VDF/TrFE)/P(VDF/HFP) copolymer blends
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Previous studies have shown that copolymers of vinylidene fluoride (VDF) and hexafluoropropylene (HFP) can exhibit large electrostrictive strains depending on sample history and copolymer composition. In an earlier study, random copolymers containing 5%HFP/ 95% VDF and 15%HFP/85%VDF were investigated. In this study, we used random copolymers of poly(VDF/TrFE) (68/32) mol% and poly(VDF/HFP) (95/5) mol% to prepare films by solution blending the two copolymers in different weight percents. Films were prepared using a two step process. First, we prepared solvent cast films of the blends using dimethylformamide (DMF) as the solvent at room temperature and then melt-pressed and quenched the films into ice water. Gold electrodes were deposited on opposing sides of the films by sputtering. We measured the electrostrictive properties as a function of electric field.
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A. C. Jayasuriya, Adriana Schirokauer, and Jerry I. Scheinbeim "Electrostrictive and ferroelectric properties of P(VDF/TrFE)/P(VDF/HFP) copolymer blends", Proc. SPIE 4329, Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices, (16 July 2001);

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