Statistical Mechanical Study of Polyvinylidene Fluoride.
Abstract
A theoretical study of polyvinylidene fluoride has been performed in which calculations have been made of the equation of state, of the piezoelectric and pyroelectric coefficients, and of the mechanism of poling of beta-phase material. Transfer-integral and mean-field methods have been used to derive the free energies of the various phases, and thence to derive the thermodynamic variables as functions of temperature, stress, and applied electric field. The poling process whereby electrical activity is induced in beta-phase material has been studied in a model in which solitary waves of rotation are induced by temperature and applied electric fields and propagate along a chain axis. The rate of spontaneous creation of these kinds of polarization and their velocity have been used to predict the times necessary for poling material under various conditions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 15, 1980
- Accession Number
- ADA084846
Entities
People
- Anton J. Hopfinger
- Philip L. Taylor
Organizations
- Case Western Reserve University