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Acoustic behaviour of chromium soap solutions in benzene–dimethyl formamide mixture
Author(s) -
Mehrotra K. N.,
Jain Mamta
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070500106
Subject(s) - formamide , speed of sound , benzene , compressibility , materials science , micelle , acoustic impedance , molar volume , volume (thermodynamics) , chemistry , analytical chemistry (journal) , thermodynamics , ultrasonic sensor , organic chemistry , aqueous solution , acoustics , physics
The critical micelle concentration and various acoustic parameters of chromium soaps (myristate, palmitate, and stearate) in a mixture of benzene and dimethyl formamide (4 : 1 v/v) have been determined by ultrasonic velocity measurements. The results showed that the ultrasonic velocity, specific acoustic impedance, molar sound velocity, and molar sound compressibility increase, while intermolecular freelength, adiabatic compressibility, and available volume decrease with increasing concentration and chain length of the soap. The results show that there is a significant interaction between soap and solvent molecules in dilute solutions and the soap molecules do not aggregate appreciably in dilute solutions. © 1993 John Wiley & Sons, Inc.