Exclusive self-aligned β-phase PVDF films with abnormal piezoelectric coefficient prepared via phase inversion

Research output: Contribution to journalArticle

Authors

  • N. Soin
  • D. Boyer
  • K. Prashanthi
  • A. A. Narasimulu
  • J. Luo
  • T. H. Shah
  • E. Siores
  • T. Thundat

Colleges, School and Institutes

External organisations

  • Inst. Renew. Energy & Environ. Technol. Uni. of Bolton, Deane Road, Bolton
  • Ecole Superieure de Chimie de Montpellier, 8 Rue de L'Ecole Normale, 34090 Montpellier
  • Dept. of Chem. & Mater. Eng., Uni. of Alberta, Edmonton

Abstract

Self-polarised poly(vinylidene fluoride), (PVDF), films were prepared via a facile phase-inversion technique wherein the polymorphism of the films was controlled from exclusive α- (>90%) to β-phase (>98%) by simply varying the quenching temperature from 100 °C to −20 °C, respectively. At low temperatures, the β-phase crystallites were found to be self-aligned, with the PVDF thin films possessing a high piezoelectric coefficient of up to −49.6 pm V−1. The extraordinarily high β-phase and piezoelectric coefficient of these PVDF films make them suitable for electroactive and energy harvesting applications.

Details

Original languageEnglish
Pages (from-to)8257-8260
JournalChemical Communications
Volume51
Issue number39
Early online date8 Apr 2015
Publication statusPublished - 14 May 2015