Dielectric Behavior of Nano-PbTiO3/PVDF Nanocomposites In-situ Synthesized by the Sol-gel Method

PbTiO3 / PVDF nanocomposites were prepared via in-situ growth of nanosized PbTiO3 particles in PVDF matrix by sol-gel method. Nanosized PbTiO3 grown in the composites film was characterized by X-ray diffractometry （XRD） and transmission electron mieroscopy, and the dielectric properties of the composite films prepared were measured. The distribution of PbTiO3 nanoparticles in-situ grown in the PVDF matrix was examined using a scanning electron microscope. The relative dielectric eonstant increases with increasing the weight fracture of PbTiO3 in-situ grown. In particular, the dielectric loss monotonically decreases with the increase of PbTiO3 content at 1 MHz.

Dielectric behavior of nano-PbTiO3/PVDF nanocomposites in-situ synthesized by the sol-gel method

PbTiO_3/PVDF nanocomposites were prepared via in-situ growth of nanosized PbTiO_3 particles in PVDF matrix by sol-gel method. Nanosized PbTiO_3 grown in the composites film was characterized by X-ray diffractometry (XRD) and transmission electron microscopy, and the dielectric properties of the composite films prepared were measured. The distribution of PbTiO_3 nanoparticles in-situ grown in the PVDF matrix was examined using a scanning electron microscope. The relative dielectric constant increases with increasing the weight fraction of PbTiO_3 in-situ grown. In particular, the dielectric loss monotonically decreases with the increase of PbTiO_3 content at 1MHz.