Structural and optical studies on sliver nitrate doped polymer blend and effect on some pathogenic bacteria

In this paper, we report the effect of poly (vinyl alcohol) (PVA)/poly (vinyl pyrrolidone) (PVP) blend with different concentration (10, 20, 30 and 40) wt % of AgNO3 preparation using the casting method . We conducted the characterization of Ag nanoparticles using Fourier transform infrared spectroscopy (FTIR) and (UV-VIS) spectroscopy. We specifically investigated the nanoparticles using UV-Vis spectroscopy in the spectral range of 200–900 nm. We established the energy gap of indirect permitted transitions and observed a decrease in their values as the concentration of nanoparticles increased. This study prepared a nanopolymer composite solution consisting of PVA-PVP-AgNO3. We tested the sensitivity of the bacteria S. aureus, S. epidermidis, E. coli, P. aeruginosa, and C. albicans to this solution. Practical results have shown that the nanopolymer composite solution is highly effective in eliminating and restricting the growth of these bacteria.