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Mixed Micellization of Sodium Dodecylbenzene Sulfonate with Polyoxyethylene Lauryl Ether Surfactants (POLE4 and POLE23) in n‐Butanol Aqueous Solution
Author(s) -
Park In Jung,
Lee Byung Hwan
Publication year - 2012
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-011-1287-y
Subject(s) - dodecylbenzene , chemistry , sodium dodecylbenzenesulfonate , aqueous solution , activity coefficient , counterion , ether , surface tension , micelle , sulfonate , critical micelle concentration , butanol , mole fraction , thermodynamics of micellization , sodium , thermodynamics , inorganic chemistry , organic chemistry , ion , ethanol , physics
Abstract The values of critical micelle concentration and counterion binding constant for the mixed micellizations of sodium dodecylbenzenesulfonate (DBS) with polyoxyethylene(4) lauryl ether (POLE4) and polyoxyethylene(23) lauryl ether (POLE23) in aqueous solution of n‐butanol at 25 °C were determined as a function of the overall mole fraction of DBS by using the electric conductivity and the surface tension methods. Various thermodynamic parameters were calculated and analyzed for the mixed micellization of DBS/POLE4 and DBS/POLE23 systems by means of the equations derived from the nonideal mixed micellar model. The results show that DBS/POLE23 mixed system has a greater deviation from the ideal model than DBS/POLE4 mixed system. These deviations of thermodynamic parameters for both mixed systems become greater with the addition and concentration increase of n‐butanol.