Poly(vinylidene fluoride)/ CaCu{sub 3}Ti{sub 4}O{sub 12} and La doped CaCu{sub 3}Ti{sub 4}O{sub 12} composites with improved dielectric and mechanical properties
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221 005 (India)
- School of Material Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221 005 (India)
Highlights: • High ϵ′ PVDF/CCTO and La doped CCTO composites prepared by Extrusion. • With addition of ceramic, there is substantial increase in the ϵ′ of matrix PVDF. • Composites exhibit double relaxation behavior. - 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{sup −2}–10{sup 6} 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.
- OSTI ID:
- 22475959
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 70; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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