Title :
AC poling of solution cast films of polyvinylidene fluoride/lead zirconate composites
Author :
Sinha, Dolly ; Pillai, P.K.C.
Author_Institution :
Indian Inst. of Technol., New Delhi, India
Abstract :
Summary form only given, as follows. Composite samples were prepared in the form of thin films (50-80 mu m) by solution casting techniques for different weight fractions of PZT (lead zirconate titanate) in a PVDF (polyvinylidine fluoride) matrix. Samples were AC poled at a temperature of approximately 180 degrees C. The AC poling at elevated temperatures considerably enhances the dielectric constant and is found to be a more efficient way of poling composite films than conventional DC poling. Scanning electron microscopy (SEM) and X-ray diffraction studies were done to correlate the increment in dielectric constant with structural modification.<>
Keywords :
X-ray diffraction examination of materials; dielectric polarisation; electrets; filled polymers; permittivity; polymer films; polymer structure; scanning electron microscope examination of materials; 180 degC; 50 to 80 micron; AC poling; PVDF; PZT; PbZrO/sub 3/TiO/sub 3/; SEM; X-ray diffraction; dielectric constant; electret; filled polymer; polarisation; polyvinylidene fluoride; solution casting; thin films; Dielectric constant; Dielectric thin films; Temperature; X-ray scattering;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford, UK
DOI :
10.1109/ISE.1988.38616