Dielectric properties of binary polyvinylidene fluoride/barium titanate nanocomposites and their nanographite doped hybrids
Y. C. Li, S. C. Tjong, R. K. Y. Li
Vol. 5., No.6., Pages 526-534, 2011
DOI: 10.3144/expresspolymlett.2011.51
DOI: 10.3144/expresspolymlett.2011.51
Corresponding author: S. C. Tjong 
GRAPHICAL ABSTRACT
ABSTRACT
Binary polyvinylidene fluoride/barium titanate (PVDF/BaTiO3) and its nanographite (GN) doped ternary nanocomposites were fabricated using a simple solution casting process followed by compression molding. The dielectric behavior of such hybrids over a wide frequency range was studied. Additions of GN with contents close to the percolation threshold were found to be very effective to enhance dielectric permittivity of the PVDF/BaTiO3 nanocomposites. In this regard, the electrical behavior of ternary PVDF/BaTiO3/GN hybrids can be explained in terms of the percolation theory. Furthermore, both dielectric constant and electrical conductivity of hybrids were found to be strongly frequency and temperature dependent.
