Title :
Polarization distributions in isotropic, stretched or annealed PVDF films
Author :
Bihler, E. ; Holdik, K. ; Eisenmenger, W.
Author_Institution :
Phys. Inst., Stuttgart Univ., West Germany
fDate :
6/1/1989 12:00:00 AM
Abstract :
The time development of the polarization distribution across the film thickness in polyvinylidene fluoride (PVDF) was observed using the pressure step response technique. The crystallite phase composition of the samples was changed by annealing and stretching at elevated temperatures. It is shown that the crystallite phase composition, e.g., the β crystallite content, determines the spatial distribution of the permanent polarization in PVDF
Keywords :
annealing; dielectric polarisation; piezoelectric materials; polymer films; β crystallite content; PVDF films; annealing; crystallite phase composition; permanent polarization; piezoelectric; polarization distribution; polyvinylidene fluoride; pressure step response technique; spatial distribution; stretching; time development; Annealing; Chemicals; Crystalline materials; Crystallization; Current measurement; Electrodes; Piezoelectric films; Piezoelectric polarization; Polymer films; Temperature measurement;
Journal_Title :
Electrical Insulation, IEEE Transactions on
