Shape-Memory PVDF Exhibiting Switchable Piezoelectricity

Macromolecular Rapid Communications
Robin HoeherJoerg C Tiller

Abstract

In this study, a material is designed which combines the properties of shape-memory and electroactive polymers. This is achieved by covalent cross-linking of polyvinylidene fluoride. The resulting polymer network exhibits excellent shape-memory properties with a storable strain of 200%, and fixity as well as recovery values of 100%. Programming upon rolling induces the transformation from the nonelectroactive α-phase to the piezoelectric β-phase. The highest β-phase content is found to be 83% for a programming strain of 200% affording a d33 value of -30 pm V(-1). This is in good accordance with literature known values for piezoelectric properties. Thermal triggering this material does not only result in a shape change but also renders the material nonelectroactive.

References

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Dec 13, 2006·Soft Matter·Marc Behl, Andreas Lendlein

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Citations

May 21, 2016·ACS Applied Materials & Interfaces·Robin HoeherJoerg C Tiller
Sep 20, 2016·Scientific Reports·Deyan Kong, Xinli Xiao

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