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Surface Activity, Thermodynamics of Micellization and Adsorption Properties of Quaternary Salts Based on Ethanolamines and Decyl Bromide
Author(s) -
Asadov Ziyafaddin H.,
Rahimov Ravan A.,
Nasibova Shafiga M.,
Ahmadova Gulnara A.
Publication year - 2010
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/s11743-010-1180-0
Subject(s) - chemistry , surface tension , thermodynamics of micellization , gibbs isotherm , critical micelle concentration , adsorption , aqueous solution , pulmonary surfactant , bromide , micelle , thermodynamics , inorganic chemistry , ethanolamines , organic chemistry , physics , ethanolamine , biochemistry
The surface‐active properties of ionic‐liquid type salts synthesized by the interaction of ethanolamines and decyl bromide have been studied. Surface tension as a function of concentration of the surfactant in aqueous solution was measured at 10, 20, 30 and 40 °C using a drop volume stalagmometer. From these measurements, the maximum surface excess concentration and the minimum area per molecule at the aqueous solution/air interface, the critical micelle concentration (CMC), the surface pressure at the CMC, and the standard thermodynamic parameters of adsorption and micellization were calculated. The structural effects on adsorption, micellization, and the effectiveness of surface tension reduction are discussed in terms of these parameters.