Studying the Optical Properties of (PVA-PEG-KBr) Composite

In this work, samples of (PVA-PEG-KBr) composites were prepared by using casting method. The effect of addition of (KBr) concentration on the optical properties of (PVA-PEG) composite have been studied in the wavelength range (200-800) nm. The absorption coefficient, energy gap, refractive index and extinction coefficient have been determined. The results show that the optical constants change with the increase of KBr concentrations.