Poly(vinylidene fluoride)/ CaCu3Ti4O12 and la doped CaCu3Ti4O12 composites with improved dielectric and mechanical properties

Abstract

Melt extrusion process has been used to prepare high relative permittivity, ε' PVDF-CCTO and PVDF-LaCCTO composites. Phase composition has been studied using powder X-ray diffraction (XRD). Microstructural, dielectric and mechanical properties have also been studied. Young's modulus of PVDF increases with the ceramic reinforcement. Dielectric measurements are made in the frequency range 10-2-106 Hz using two probe Novocontrol impedance analyser (ZG4) from room temp to 120 °C to study the dielectric relaxation. There is a substantial increase in ε' of the matrix PVDF on addition of LaCCTO. © 2015 Elsevier Ltd. All rights reserved.