Low Energy Gamma Radiation Induced Effects on Ultrasonic Velocity and Acoustic Parameters in Polyvinylidene Fluoride SolutionReport as inadecuate




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Journal of Materials - Volume 2016 2016, Article ID 8470689, 8 pages -

Research Article

Department of Physics, KLS Gogte Institute of Technology, Belgaum, Karnataka, India

Department of Physics, Bheemanna Khandre Institute of Technology, Bhalki, India

Received 30 April 2016; Revised 4 August 2016; Accepted 18 August 2016

Academic Editor: Victor M. Castaño

Copyright © 2016 S. S. Kulkarni and U. V. Khadke. 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.

Abstract

The modification of polyvinylidene fluoride PVDF polymer properties with irradiation is of interest as it possesses unique piezo-, pyro-, and ferroelectric properties. In this paper, we report the results of acoustic parameters of irradiated PVDF mixed with dimethylacetamide DMAC solution with low energy -source Cs-137. The polymer solution covered with mica film assures only -ray passage and the duration was increased from 18 to 50 hours to achieve the higher dose rate. The dose rate was estimated using the strength of the radioactive source and the duration of the exposure. The ultrasonic velocity , density , and viscosity of 0.2 wt% and 0.5 wt% PVDF dissolved in pure DMAC solution, irradiated with different dose rate were measured using ultrasonic interferometer Mittal make, Pyknometer, and Oswald’s viscometer, respectively. It is observed that the values of , , and change with dose rate. The acoustic parameters such as adiabatic compressibility , intermolecular free path length , acoustic impedance , relative association RA, ultrasonic attenuation , and relaxation time are calculated using the experimental data. These results are interpreted in terms of the solute-solvent interaction in a polymer solution and scissoring chain damage.





Author: S. S. Kulkarni and U. V. Khadke

Source: https://www.hindawi.com/



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