Characterization Study and Optical properties of (GA) Gum acacia /(MF)Melamine formaldehyde composites

Abstract

In this research we fabricated new Thin films of (Gum acacia) polysaccharide , melamine formaldehyde and their blends were prepared using cast method .Optical absorption spectra of these thin films have been recorded  in the wavelength range (200-900)nm using UV-spectrophotometer. Optical band gap of the films has been calculated by using Taucs relation and variations in the values of optical band gap with the variation of concentration in the blend films have been found from (3.75-4.15) ev