Electric field-induced piezoelectricity in polymer film
Article first published online: 9 MAR 2003
Copyright © 1975 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 19, Issue 5, pages 1373–1379, May 1975
How to Cite
Zimmerman, R. L., Suchicital, C. and Fukada, E. (1975), Electric field-induced piezoelectricity in polymer film. J. Appl. Polym. Sci., 19: 1373–1379. doi: 10.1002/app.1975.070190517
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Revised: 7 NOV 1974
- Manuscript Received: 24 OCT 1974
An apparatus is devised for measuring the real and imaginary components of the piezoelectric strain constant d = d′ − id″ for polymer films with a d.c. bias field. Electric fieldinduced piezoelectricity is observed for films of several types of polymer. The ratio of the piezoelectric constant to the d.c. bias field gives (ϵ + κ)/G where ϵ is the dielectric constant, κ is the electrostriction constant, and G is the elastic constant. The temperature dependence of the field-induced piezoelectricity gives, therefore, combined information of dielectric and elastic properties of polymers. After heating to about 95°C followed by cooling to room temperature, maintaining a constant d.c. basis on a poly(vinyl chloride) film, piezoelectricity is observed at null d.c. field, which suggests the introduction of a residual polarization in the films.