Abstract
Nanocomposite materials consisting of polymer matrices and nano-sized fillers have fascinated scientists with their superior functional properties, attained at relatively low filler loading. In this work, nanocomposite films of poly(methyl methacrylate) (PMMA)-reinforced with different concentrations of partially reduced graphene oxide/silver (rGO/Ag) hybrid were prepared in two different solvents following an ex situ chemical method. By employing solvent casting, all the samples were prepared as free-standing films. The structural and morphological characterisations of a GO/Ag hybrid and the as-prepared film samples were done with different tools such as x-ray diffraction (XRD), UV–Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and electron microscopy (SEM and TEM). Chemical microanalysis of the nanohybrid was carried out by energy-dispersive x-ray (EDX) spectroscopy. Dielectric properties of these films have been carried out at room temperature in the frequency range of 100 Hz–2 MHz using an LCR meter, and these films show considerable changes in their properties when loaded with GO/Ag hybrid nanocomposites. The filler and solvent-dependent properties shown by the free-standing films make them a promising candidate for the fabrication of flexible energy storage devices.
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