Structural study of aqueous solutions of tetrahydrofuran and acetone mixtures using dielectric relaxation technique
A C Kumbharkhane S N Helambe M P Lokhande S Doraiswamy S C Mehrotra
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/pram/046/02/0091-0098
The complex permittivity, static dielectric constant and relaxation time for tetrahydrofuran-water and acetone-water mixtures have been determined at 0°, 10°, 25° and 35°C using time domain reflectometry technique (TDR). The behaviour of relaxation time of the mixture shows a maxima for the mixture with 30% of water by volume. This suggests that the tendency to form cluster between water and solute molecule is maximum for this mixture. The excess permittivity for both tetrahydrofuran-water mixture and acetone-water mixtures, are found to be negative. The Kirkwood correlation factor has been determined at various concentrations of water. Static dielectric constant for the mixtures have been fitted well with the modified Bruggeman model. The values of the Bruggeman parametera for tetrahydrofuran is found to be more than the corresponding value for acetone.
A C Kumbharkhane1 S N Helambe1 M P Lokhande1 S Doraiswamy1 2 S C Mehrotra1
Volume 97, 2023
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2022-2023 Indian Academy of Sciences, Bengaluru.