Issue 28, 2017, Issue in Progress

Facile preparation of highly oriented poly(vinylidene fluoride) uniform films and their ferro- and piezoelectric properties

Abstract

Uniform active films are highly desirable for electronic applications, but still challenging. This work proposed a convenient and effective approach for the production of uniform oriented PVDF thin films with high content of polar β-phase by blade shear. The obtained films not only had a smooth surface, but also achieved uniform component distribution. The results revealed that PVDF crystals preferentially oriented perpendicular to the shear direction and the largest relatively β-phase content was up to 93% calculated from FTIR. It was also found that an appropriate elevated temperature is helpful to the formation of all-trans β-phase with the aid of shear. The oriented uniform PVDF films showed outstanding switching and piezoelectric properties with a polarization switching voltage as low as 3 V and a relatively small coercive field of ∼6 MV m−1. The observed properties may result from the enhancement of crystallinity of the β-phase and the orientation of crystals. The results suggest that oriented PVDF films can be suitably implemented in the fabrication of electronic devices.

Graphical abstract: Facile preparation of highly oriented poly(vinylidene fluoride) uniform films and their ferro- and piezoelectric properties

Article information

Article type
Paper
Submitted
14 Jan 2017
Accepted
13 Mar 2017
First published
17 Mar 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 17038-17043

Facile preparation of highly oriented poly(vinylidene fluoride) uniform films and their ferro- and piezoelectric properties

F. Xu, K. Zhang, Y. Zhou, Z. Qu, H. Wang, Y. Zhang, H. Zhou and C. Yan, RSC Adv., 2017, 7, 17038 DOI: 10.1039/C7RA00586E

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