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Evaluation of Nanostructure, optical absorption, and thermal behavior of poly(vinyl alcohol)/poly (N-vinyl-2-pyrrolidone) based nanocomposite films containing coated SiO2 nanoparticles with citric acid and l(+)-ascorbic acid


Nanocomposite films of poly(vinyl alcohol) (PVA)–poly(N-vinyl-2-pyrrolidone) (PVP) blend filled with different weight percentages of nano-silica were prepared using solution intercalation method. At first, to better dispersion and good compatibility of nano-silica embedded in the polymer matrix, surface tailoring of it was carried out by two bio-safe molecules, citric acid and l(+)-ascorbic acid. Then, the effect of the modified nano-silica (MS) on the PVA–PVP blend was studied. So, different characterization techniques were running including, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), ultraviolet–visible (UV–Vis) spectroscopy, and thermogravimetric analysis (TGA). POLYM. COMPOS., 2016. © 2016 Society of Plastics Engineers

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