Abstract
Films of polymer nanoconnposites based on polymer blend of polyvinyl alcohol (PVA)/ polyvinyl pyrrolidone (PVP) loaded by different contents of gold nanoparticles was prepared using casting method. The correlation between theoretical investigation using spectroscopic density functional theory (DFT) and experimental techniques by X-ray diffraction and Fourier transforrninfrared (FT-IR) spectroscopy. IR bands of C=O stretching and C=C bending (at about 1441 cm(-1)) is attributed to sernie-rystalline nature of PVA/PVP polymer blend as obtained from X-ray results. The estimated forms from DFT and FT-IR spectra show themain characteristic bands of PVA/PVP blend in their positions while PVP adsorbed the nanogold at the surface preferably via the non-bonding electrons of the carbonylgroup. Scanning electron microscopy (SEM) images show that the prepared gold nanoparticleswere mono dispersed within the PVA/PVP polymeric matrices.