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Advances in Materials Science and Engineering
Volume 2018 (2018), Article ID 1738612, 5 pages
Research Article

Molecular Association Studies on Polyvinyl Alcohol at Different Concentrations

1Ultrasonic and Dielectric Laboratory, Department of Physics, H.N.B. Garhwal University, Srinagar, Uttarakhand, India
2IFTM University, Lodhipur Rajput, Delhi Road, Moradabad 244001, India

Correspondence should be addressed to Richa Saxena

Received 17 August 2017; Revised 30 October 2017; Accepted 6 November 2017; Published 17 January 2018

Academic Editor: Antonio Facchetti

Copyright © 2018 Richa Saxena and S. C. Bhatt. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Ultrasonic velocities, densities, and viscosities have been measured for the solution of polyvinyl alcohol in water at concentration range of 0.3% to 1% at temperature 35°C. Ultrasonic velocities have been measured using variable path ultrasonic interferometer at 1 MHz frequency. The acoustical parameters like adiabatic compressibility, acoustic impedance, intermolecular free length, and relaxation time have been calculated by using above-mentioned values of ultrasonic velocities, densities, and viscosities. The variation of these acoustical parameters is explained in terms of solute-solvent interaction in a polymer solution.