Studies on thermo-acoustic parameters in the dilute solutions of poly(ethyleneglycol)

Ultrasonic velocities and densities have been measured for the dilute solutions of poly(ethylene glycol) of average molecular mass 400 g mol −1 in benzene at different temperatures between 299 and 328 K. The experimental data have been used to compute the thermo-acoustical parameters namely isentrop...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2013-02, Vol.70 (2), p.603-618
Main Authors: Sannaningannavar, F. M., Navati, B. S., Ayachit, N. H.
Format: Article
Language:English
Subjects:
Acoustic impedance
Acoustic properties
Acoustic velocity
Acoustics
Applied sciences
Benzene
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Compressibility
Dilution
Exact sciences and technology
Hydrocarbons
Molar volume
Molecular structure
Organic Chemistry
Organic polymers
Original Paper
Parameters
Physical Chemistry
Physicochemistry of polymers
Polyethylene glycol
Polymer Sciences
Polymers
Properties and characterization
Soft and Granular Matter
Solution and gel properties
Solvents
Temperature
Velocity
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Summary:Ultrasonic velocities and densities have been measured for the dilute solutions of poly(ethylene glycol) of average molecular mass 400 g mol −1 in benzene at different temperatures between 299 and 328 K. The experimental data have been used to compute the thermo-acoustical parameters namely isentropic compressibility ( β ), intermolecular free length ( L f ), molar volume ( V m ), Schoff’s available volume ( V a (s)), acoustic impedance ( Z ), molar sound velocity ( R a ), and molar compressibility ( W ). Variation of these parameters with temperature of the sample and mole fraction of the solute in the solution, keeping one of the either constant has been discussed to collect the informations on molecular structure and intermolecular interactions.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-012-0881-0