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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Supriya, L. Kumar and M. Kar 
Corresponding Authors:
M. Kar 
DOI #:
10.1002/pc.24840 
Title:
Optimization of dielectric properties of PVDF–CFO nanocomposites 
Journal:
Journal of Polymer Composites  
Year:
2019 
Volume:
40 
Page:
1239- 1250 
Keywords:
dielectric properties, nanocomposites 
Abstract:
Incorporation of different types of nanofillers in the PVDFpoly(vinylidene difluoride) matrix exhibits promising dielec-tric, magnetic, piezo, pyro, and ferroelectric properties forvarious applications. Hence a novel nanocomposite hasbeen develope d by using PVDF and cobalt ferrite (CFO)(CoFe2O4) with different particle size of CFO for dielectricapplications. The nanocomposite has been characte rizedby the X-ray diffraction pattern, atomic force microscopy,transmission electron microscopy, fourier transform infra-red spectroscopy, field emission-scanning electron micros-copy), and dielectric measure ments. The space chargeeffect at the PVDF and CFO interfaces offers the interfacialpolarization in nanocompo site, which contribute to tune thedielectric response of nanocomposite along with lowdielectric loss. The filler size has been optimized to havebetter formation of polar β phaseinPVDFalongwithhighdielectric properties. The dielectric constant in nanocom-posite has increased three times compare to that of PVDF.The 20 ± 1 nm size (CFO) filler in PVDF matrix exhibits opti-mized dielectric properties.POLYM. COMPOS., 40:1239–12 50,2019. © 2018 Society of Plastics Engineers 
Entered by:
Venkata Dantham on 2020-08-02 
 
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