Investigation of Acoustical Parameters of Polyvinyl Acetate

Pankaj K.Singh, S.C Bhatt


In the present paper the ultrasonic velocity (v), density (ρ) and viscosity (η) have been measured for the solutions
of polyvinyl acetate of average molecular weight 45000 approx. in acetic acid at concentration range 0.50% to
2.00% and in temperature range 35oC to 55oC respectively. Ultrasonic velocity has been measured using variable
path ultrasonic interferometer at 1MHz frequency. Using above mentioned values of ultrasonic velocity, density
and viscosity, various acoustical parameters like adiabatic compressibility, acoustic impedance, relaxation time
and ultrasonic attenuation have been computed. The variation of adiabatic compressibility (β), acoustic impedance
(Z), relaxation time ( ?) and ultrasonic attenuation (α/f2) with concentration and temperature have been studied.
Acoustical parameters provide important information in understanding the solute-solvent interaction in a polymer

Full Text:



Applied Physics Research   ISSN 1916-9639 (Print)   ISSN 1916-9647 (Online)

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the '' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.

images_120. proquest_logo_120 lockss_logo_2_120 udl_120.