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A Comparative Study of Micellization Behavior of an Ethoxylated Alkylphenol in Aqueous Solutions of Glycine and Leucine
Author(s) -
Chauhan Suvarcha,
Sharma Kundan,
Kumar Kuldeep,
Kumar Girish
Publication year - 2014
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/s11743-013-1456-2
Subject(s) - chemistry , isentropic process , pulmonary surfactant , aqueous solution , amino acid , glycine , molar volume , leucine , phenol , alkyl , organic chemistry , molar , chromatography , thermodynamics , biochemistry , medicine , dentistry , physics
Abstract Densities ( d ) and sound velocities ( v ) of an ethoxylated alkyl phenol surfactant in aqueous solutions of two amino acids, namely glycine and leucine, have been measured over a temperature range of 25–40 °C at intervals of 5 °C by using density and sound analyzers. Experimental data have been used to calculate the isentropic compressibilities ( κ s ), apparent molar volumes ( ϕ v ) and apparent molar adiabatic compressions ( ϕ κ ) in order to explain amino acid–surfactant interactions. The results have been discussed in terms of the effect of amino acids on the micellization behavior of the surfactant. A comparative study of both the amino acids has been carried out and is found that both amino acids produce a decrease in the CMC value of nonionic surfactant but to different extents.