Piezoelectric activity in a copolymer of acrylonitrile and methylacrylate

Author

von Berlepsch, H. ; Künstler, W. ; Wedel, A. ; Danz, R. ; Geiß, D.

Volume

24

Issue

2

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

357

Lastpage

362

Abstract

Results of investigations of piezoelectric properties in a copolymer of acrylonitrile and methylacrylate are summarized. A preliminary explanation is given of the observed phenomena on the basis of surface potential measurements. The maximum values of piezoelectric strain coefficient d₃₁ obtained after optimizing the poling conditions for stretched and unstretched films were around 3 and 0.85 pC/N, respectively. The time stability of piezoelectricity was found to be relatively low. A hysteresis loop of electric displacement versus electric field was observed and assumed to be a manifestation of a ferroelectriclike behavior. All the observations point to a dipolar nature of piezoelectricity where ferroelectric and frozen-in dipole orientations obviously superimpose

Keywords

piezoelectric materials; polymers; surface potential; acrylonitrile; copolymer; dipolar nature; electric displacement; electric field; ferroelectriclike behavior; frozen-in dipole orientations; hysteresis loop; methylacrylate; piezoelectric properties; piezoelectric strain coefficient; poling conditions; surface potential measurements; time stability; Amorphous materials; Chemistry; Crystallization; Ferroelectric materials; Glass; Optical polarization; Piezoelectric polarization; Piezoelectricity; Polymers; Pyroelectricity;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.90298

Filename

90298