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ARTICLE

Study of Optical, Electrical and Acoustical Properties of CuSO₄ Doped Polyvinyl Pyrrolidone (PVP) based Polymer Solutions

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Department of Mathematics, Statistics & Physics, Punjab Agricultural University, Ludhiana, India-141004

* Corresponding Author: e-mail:

Journal of Polymer Materials 2020, 37(3-4), 131-142. https://doi.org/10.32381/JPM.2020.37.3-4.2

Abstract

The optical, electrical and acoustical properties of a polymer solution based on polyvinyl pyrrolidone (PVP) doped with different concentration of cupric sulphate (CuSO₄ ) were studied.UVVIS spectroscopy results reflected that absorption increases in asymmetric manner and the absorption peak showed red shift with increasing Cu ions concentration. The optical band gap (direct and indirect) was found to decrease with increase in Cu ions concentration in the polymer due to increase in the density of localized states in the band-gap.The value of Urbach energy is also evaluated from the transmission spectra and the activation energies are also evaluated from the conductivity measurements and found to decrease with the increase in the concentration of Cu ion in the PVP. The ultrasonic velocity and surface tension are increased while the adiabatic compressibility, acoustic impedance and intermolecular free length decreases with increase in the concentration of CuSO₄ in the polymer PVP.

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