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Shape-Memory PVDF Exhibiting Switchable Piezoelectricity

Hoeher, Robin and Raidt, Thomas and Novak, Nikola and Katzenberg, Frank and Tiller, Joerg C. (2015):
Shape-Memory PVDF Exhibiting Switchable Piezoelectricity.
In: Macromolecular Rapid Communications, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, ISSN 10221336, [Online-Edition: http://onlinelibrary.wiley.com/doi/10.1002/marc.201500410/ab...],
[Article]

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 fl uoride. The resulting polymer network exhibits excellent shape-memory properties with a storable strain of 200%, and fi xity 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 d 33 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.

Item Type: Article
Erschienen: 2015
Creators: Hoeher, Robin and Raidt, Thomas and Novak, Nikola and Katzenberg, Frank and Tiller, Joerg C.
Title: Shape-Memory PVDF Exhibiting Switchable Piezoelectricity
Language: English
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 fl uoride. The resulting polymer network exhibits excellent shape-memory properties with a storable strain of 200%, and fi xity 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 d 33 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.

Journal or Publication Title: Macromolecular Rapid Communications
Publisher: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Uncontrolled Keywords: electroactive polymer ; piezoelectricity ; polyvinylidene fluoride ; shape-memory polymer ; switchable
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 20 Oct 2015 07:48
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/marc.201500410/ab...
Identification Number: doi:10.1002/marc.201500410
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