Fabrication and Investigation of (PVA/PAA/Ag) nanocomposites for Antibacterial Application

Abstract

A nanocomposite (PVA/PAA/Ag) was prepared by casting method in different concentration of the nanomaterial (Ag) represented by (2,4,6 and 8(%wt. the structural, optical and antibacterial characteristic were studied. The optical microscope (OM) proved the silver nanoparticles form a continuous network within the blend at a concentration of (8wt.%). SEM measurements reveal the surface morphology of the (PVA/PAA/Ag) nanocomposites films, which are homogeneous and coherent with aggregates or chunks scattered at random on the top surface. Optical measurement showed an increase in the absorbance with an increase in the concentration of the nanomaterial, while the transmission and gap of energy decreased, also the coefficient of absorption, coefficient of extinction, index of refractive, real and imaginary parts of dielectric constants and optical conductivity are rising with the rise of the content of Ag NPs. The inhibition zone for gram-positive and gram-negative was increased with increase the content of Ag nanoparticles.