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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. P. Muduli, S Parida, S K Rout, S. Rajput and M. Kar 
Corresponding Authors:
S Parida 
DOI #:
Doi https://doi.org/10.1088/2053-1591/ab2d85 
Title:
Effect of hot press temperature on β-phase, dielectric and ferroelectric properties of solvent casted Poly(vinyledene fluoride) films 
Journal:
Mater. Res. Express  
Year:
2019 
Volume:
Page:
095306 
Keywords:
ferroelectric properties , Poly(vinyledene fluoride) films 
Abstract:
Poly(vinylidene fluoride) (PVDF) films were prepared by solvent casting at different temperatures (40 °C, 50 °C, 60 °C) and each solvent casted film were hot pressed at 110 °C, 130 °C and 150 °C. The transition of electroactive β-phase from non-polar α-phase is deeply influenced by hot pressing temperature. Phase transition was studied by x-ray diffraction (XRD) and fraction of β-phase was calculated by analyzing Fourier Transform infrared (FTIR) spectra. Differential Scanning Calorimetry(DSC) was performed for all the samples to determine degree of crystallinity. Dielectric constant increased with increase in β-fraction. Remnant polarisation(Pr) and Coercive field(Ec) from ferroelectric hysteresis loop were influenced by both β-fraction and degree of crystallinity. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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