Effect of fabrication technique on the crystalline phase and electrical properties of PVDF films

• Autorzy: Mahato P. K. , Seal A. , Garain S. , Sen S.

Identyfikatory

DOI

10.1515/msp-2015-0020

• Języki publikacji: EN

Abstrakty

EN

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 α-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.

Słowa kluczowe

EN

PVDF; crystallinity; dielectric; remanent polarization

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2015
• Tom: Vol. 33, No. 1
• Strony: 157--162
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Mahato P. K.

• Academy of Scientific and Innovative Research, CSIR-CGCRI, Kolkata 700032, India
• Sensor and Actuator Division, Central Glass and Ceramics Research Institute, Kolkata 700032, India

autor

Seal A.

• Sensor and Actuator Division, Central Glass and Ceramics Research Institute, Kolkata 700032, India

autor

Garain S.

• Department of Physics, Jadavpur University, Kolkata 700032, India

autor

Sen S.

• Sensor and Actuator Division, Central Glass and Ceramics Research Institute, Kolkata 700032, India

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