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Silicon carbide-induced piezoelectric β-phase in poly(vinylidene fluoride) and its properties

Published online by Cambridge University Press:  09 May 2012

Jay Sheth ,
Devendra Kumar ,
Vimal K. Tiwari  and
Pralay Maiti
Jay Sheth
Affiliation:
Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
Devendra Kumar
Affiliation:
Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
Vimal K. Tiwari
Affiliation:
School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
Pralay Maiti*
Affiliation:
School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The piezoelectric β-phase of poly(vinylidene fluoride) (PVDF) has been synthesized through solution route in presence of varying percentage of silicon carbide (SiC). Various measurements were conducted to analyze the effect of SiC addition on structural, mechanical, and dielectric properties, as also the properties affecting hydrophilicity and morphology of PVDF. The x-ray diffraction, Fourier transform infrared spectroscopic and differential scanning calorimetry analyses confirm the presence of β-phase of PVDF on addition of SiC. The Young’s modulus of the composites increases as compared with pristine PVDF. The hydrophilic nature of the composites improves with increasing SiC content. Dielectric constant increases in composites, especially at lower frequency range and the relaxation pattern in the crystalline phase changes significantly causing reduction of relaxation frequency with increasing SiC concentration.

Keywords

A: Polymer-matrix composites (PMCs)B: Mechanical propertiesThermal propertiesC: Scanning electron microscope (SEM)Dielectric properties
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 14 , 28 July 2012 , pp. 1838 - 1845
Copyright
Copyright © Materials Research Society 2012

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