Cover Page March-2017-Advanced Materials Letters

Advanced Materials Letters

Volume 8, Issue 3, Pages 288-294, March 2017
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High- quality factor poly (vinylidenefluoride) based novel nanocomposites filled with graphene nanoplatelets and vanadium pentoxide for high-Q capacitor applications

Kumar Digvijay Satapathy1, Kalim Deshmukh1, M. Basheer Ahamed1*, Kishor Kumar Sadasivuni2, Deepalekshmi Ponnamma3, S. K. Khadheer Pasha4, Mariam Al-Ali AlMaadeed3, Jamil Ahmad5

1Department of Physics, B.S. AbdurRahman University, Chennai 600048, TN, India

2Mechanical & Industrial Engineering Department, Qatar University, P.O. Box 2713, Doha, Qatar

3Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar

4Department of Physics, School of Advanced Sciences, VIT University, Vellore-632014, TN, India

5Department of Chemical Engineering, University of Engineering and Technology, Peshawar, Pakistan

Adv. Mater. Lett., 2017, 8 (3), pp 288-294

DOI: 10.5185/amlett.2017.6539

Publication Date (Web): Jan 28, 2017

E-mail: mbasheerahamed133@gmail.com

Abstract

Herein, we report the synthesis of poly (vinylidene fluoride) (PVDF) based novel nanocomposites reinforced with graphene nanoplatelets (GNP) and vanadium pentoxide (V2O5) as nanofillers. The PVDF/V2O5/GNP nanocomposite films were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), polarized optical microscopy (POM) and scanning electron microscopy (SEM). The electrical properties of nanocomposites were investigated to ascertain the synergistic effect of fillers on the quality factor (Q-factor) of nanocomposites. The FTIR and XRD results infer good interaction between PVDF and V2O5 and the good dispersion of nanofillers in the PVDF matrix. The TGA results revealed that the thermal stability of PVDF/V2O5/GNP nanocomposite has improved at higher loading of nanofillers due to the good interaction between the nanofillers and the polymer matrix. The electrical analysis of nanocomposite films demonstrates high Q-factor value (1099.04) at 4.7 wt % V2O5 and 0.3 wt % GNP loading. With further increase in GNP loading to 1 wt %, the Q-factor becomes lower (356.52) which could be due to the enhanced conductivity of the samples. The significant enhancement in the value of Q-factor shows that the nanocomposites can be used as a potential candidate for high-Q capacitor applications. 

Keywords

Graphene nanoplatelets, PVDF, V2O5, high-Q capacitors.

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