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Studies on surface tension of the system: Barium soap‐water and propanol‐1
Author(s) -
Mehrotra K. N.,
Varma R. P.
Publication year - 1969
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02635721
Subject(s) - surface tension , micelle , propanol , barium , thermodynamics , chemistry , materials science , ethanol , physics , inorganic chemistry , organic chemistry , aqueous solution
The surface tension results of the barium soap solutions in water‐propanol‐1 mixtures have been explained on the basis of Szyszkowski's empirical equation: γ = γ o (1 + X ln Y) ‐ X γ o ln C. The values of the constants X and Y of the equation have been calculated for various soap systems. The constant X is found to be almost independent of the composition of the solvent mixture but it depends to some extent on the chain length of the soap. The values of Y show a marked increase at 50% propanol‐1 concentration which confirms that the transition in the nature of the micelles takes place at about 50% propanol‐1 concentration. The values of X and Y are suggestive of the size and nature of the micelles, respectively.