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AuthorDeshmukh, Kalim
AuthorAhamed, M. Basheer
AuthorSadasivuni, Kishor Kumar
AuthorPonnamma, Deepalekshmi
AuthorDeshmukh, Rajendra R.
AuthorPasha, S. K. Khadheer
AuthorAlMaadeed, Mariam Al-Ali
AuthorChidambaram, K.
Available date2021-09-01T10:02:41Z
Publication Date2016
Publication NameJournal of Polymer Research
ResourceScopus
URIhttp://dx.doi.org/10.1007/s10965-016-1056-8
URIhttp://hdl.handle.net/10576/22349
AbstractNovel flexible dielectric composites composed of polyvinyl alcohol (PVA), polyethylene glycol (PEG), and graphene oxide (GO) with high dielectric constant and low dielectric loss have been developed using facile and eco-friendly colloidal processing technique. The structure and morphology of the PVA/PEG/GO composites were evaluated using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-vis spectroscopy (UV-vis), X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The dielectric behavior of PVA/PEG/GO composites was investigated in the wide range of frequencies from 50 Hz to 20 MHz and temperature in the range 40 to 150 °C using impedance spectroscopy. The dielectric constant for PVA and PVA/PEG (50/50) blend film was found to be 10.71 (50 Hz, 150 °C) and 31.22 (50 Hz, 150 °C), respectively. The dielectric constant for PVA/PEG/GO composite with 3 wt% GO was found to be 644.39 (50 Hz, 150 °C) which is 60 times greater than the dielectric constant of PVA and 20 times greater than the dielectric constant of PVA/PEG (50/50) blend film. The PVA/PEG/GO composites not only show high dielectric constant but also show low dielectric loss which is highly attractive for practical applications. These findings underline the possibilities of using PVA/PEG/GO composites as a flexible dielectric material for high-performance energy storage applications such as embedded capacitors.
Languageen
PublisherSpringer Netherlands
SubjectAtomic force microscopy
Capacitors
Dielectric devices
Dielectric losses
Fourier transform infrared spectroscopy
Graphene
High-k dielectric
Polymer blends
Polyvinyl alcohols
Scanning electron microscopy
Ultraviolet visible spectroscopy
X ray diffraction
Bio-composites
Energy storage applications
Graphene oxides
High dielectric constants
High-k materials
Impedance spectroscopy
Poly (vinyl alcohol) (PVA)
Structure and morphology
Dielectric materials
TitleGraphene oxide reinforced polyvinyl alcohol/polyethylene glycol blend composites as high-performance dielectric material
TypeArticle
Issue Number8
Volume Number23
dc.accessType Abstract Only


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