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Communication Dans Un Congrès Année : 2019

Crystal-Crystal transitions in poly(VDF-ter-TrFE-ter-CTFE): Influence of CTFE termonomers

Résumé

The increasing industrial interest for printed organic electronics these last years has led to the development of VDF-based electroactive polymers for numerous energy-related applications (sensors, actuators, capacitors) [1]. Depending on their CTFE content (from 0 to 10 mol %), poly (VDF-ter-TrFE-ter-CTFE), poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) copolymers exhibit ferroelectric (FE) or relaxor ferroelectric (RFE) properties at low temperature whereas they all present paraelectric (PE) behavior at high temperature. This thermal evolution of their electro-active properties is related to reversible crystal-crystal transitions. Using simultaneous SAXS-WAXS experiments along thermal cycles, we studied these structural transitions for three different copolymers with various amount of CTFE (0,  5 and  10 mol %).

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Chimie
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hal-03978465 , version 1 (08-02-2023)

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  • HAL Id : hal-03978465 , version 1

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François Bargain, Damien Thuau, Pierre Panine, Georges Hadziioannou, Fabrice Domingues Dos Santos, et al.. Crystal-Crystal transitions in poly(VDF-ter-TrFE-ter-CTFE): Influence of CTFE termonomers. European Polymer Congress, EPF 2019, European Polymer Federation, Jun 2019, Heraklion - Crète, Greece. ⟨hal-03978465⟩
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