Title :
Hysteresis of dipole orientation in corona-poled PVDF films
Author :
Wu, Jiazhen ; Yao, Hongwei ; Zou, Zhigang ; Wang, Kunhua
Author_Institution :
Dept. of Chem. Eng., Tsinghua Univ., Beijing, China
Abstract :
Perpendicular polarized spectroscopy of polyvinylidene fluoride (PVDF) during corona poling was performed. The in-situ tracing infrared technique was used in the study. While the poling voltage applied to the film was changing, the dipole orientation of β-form PVDF displayed a hysteresis loop; after treatment its figure was similar to the PVDF D-E hysteresis. It is suggested that the b-axis 60° step rotation is due to the existence of a potential barrier between 0° and 60°
Keywords :
dielectric polarisation; electrets; infrared spectra of organic molecules and substances; polymer films; corona-poled PVDF films; dipole orientation; electret; hysteresis loop; in-situ tracing infrared technique; polarized spectroscopy; polyvinylidene fluoride; Absorption; Corona; Ferroelectric films; Ferroelectric materials; Hysteresis; Infrared spectra; Optical polarization; Spectroscopy; Surface discharges; Voltage;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167254
