Effect Of Thermal Annealing On The Optical Properties Of Thin Films Of Polymer Blend (PMMA:PVC:PS)

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Muthanna Journal of Pure Sciences – MJPS

VOL.(5), NO.(1), 2018

Ali N. Sabbar 1*, Karar M.Talib2, and Hassan T. Badh1

1Department of Physics, College of Science, Al Muthanna University, Iraq


DOI: 10.18081/2226-3284/018-3/1-7



In this paper, we report upon preparation and optical properties of the polymer blend (50%PMMA:25%PVC:25%PS) thin films. The thin films have been prepared with specific ratios using the casting technique at normal weather conditions. The films were subjected to heat treatment in varying temperatures for three hours. The results showed that increase thermal annealing temperature leads to decrease values of the direct and indirect energy gap, but increase the extinction coefficient and optical conductivity. The refractive index, real and imaginary dielectric constants showed a heterogeneous behaviour. Thermal annealing by 80 oC and up leads to deformation the thin films.

Keywords: Thin films, optical properties, annealing, casting method, polymer blend.

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