Correlation of piezoelectric effect and TSC in stretched polystyrene-acrylonitrile films

Author

Hundal, Jasbir S. ; Nath, R.

Author_Institution

Dept. of Phys., Roorkee Univ., India

Volume

4

Issue

6

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

742

Lastpage

747

Abstract

The piezoelectric coefficient d₃₁ of stretched SAN (polystyrene-co-acrylonitrile) films has been measured under different poling and stretching conditions. The maximum average value of d₃₁ has been found to be 3.85 pC/N for 2.5× stretched films, corona poled at field E_P≃50 MV/m, and poling temperature T_P=85°C. The TSC (thermally stimulated current) experiments were performed to obtain the contribution of the polarization to the piezoelectric activity. The shrinkage effect and the TSC results are correlated to elucidate the molecular relaxation processes. The elastic modulus, crystallinity and polarization parameters are correlated to the piezoelectricity. The contributions of the dimensional and the local field effects to the piezoelectric activity in SAN are discussed

Keywords

elastic moduli; piezoelectric thin films; polymer blends; polymer films; thermally stimulated currents; 85 C; SAN; TSC; corona poling; crystallinity; elastic modulus; molecular relaxation; piezoelectric coefficient; polarization; polystyrene-acrylonitrile film; shrinkage; stretching; thermally stimulated current; Corona; Crystallization; Physics; Piezoelectric effect; Piezoelectric films; Piezoelectric polarization; Piezoelectricity; Polymer films; Storage area networks; Temperature;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.654690

Filename

654690