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Materials Science-Poland

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IMPACT FACTOR 2016: 0.610

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2083-134X
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Effect of fabrication technique on the crystalline phase and electrical properties of PVDF films

P. K. Mahato
  • Academy of Scientific and Innovative Research, CSIR-CGCRI, Kolkata 700032, India
  • Sensor and Actuator Division, Central Glass and Ceramics Research Institute, Kolkata 700032, India
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ A. Seal
  • Sensor and Actuator Division, Central Glass and Ceramics Research Institute, Kolkata 700032, India
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ S. Garain / S. Sen
Published Online: 2015-03-13 | DOI: https://doi.org/10.1515/msp-2015-0020

Abstract

The effect of different fabrication techniques on the formation of electroactive β-phase polyvinylidene fluoride (PVDF) has been investigated. Films with varying concentration of PVDF and solvent - dimethyl formamide (DMF) were synthesized by tape casting and solvent casting techniques. The piezoelectric β-phase as well as non polar β-phase were observed for both the tape cast and solvent cast films from X-ray diffraction (XRD) micrographs and Fourier transform infra-red spectroscopy (FT-IR) spectra. A maximum percentage (80 %) of β-phase was obtained from FT-IR analysis for a solvent cast PVDF film. The surface morphology of the PVDF films was analyzed by FESEM imaging. The dielectric properties as a function of temperature and frequency and the ferroelectric hysteresis loop as a function of voltage were measured. An enhancement in the value of the dielectric constant and polarization was obtained in solvent cast films.

Keywords : PVDF; crystallinity; dielectric; remanent polarization

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About the article

Received: 2014-08-04

Accepted: 2014-11-11

Published Online: 2015-03-13

Published in Print: 2015-03-01


Citation Information: Materials Science-Poland, ISSN (Online) 2083-134X, DOI: https://doi.org/10.1515/msp-2015-0020.

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© 2015. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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