TITLE

Study of mixed micellar aqueous solutions of sodium dodecyl sulfate and amino acids

AUTHOR(S)
Ali, A.; Bhushan, V.; Malik, N.; Behera, K.
PUB. DATE
July 2013
SOURCE
Colloid Journal;Jul2013, Vol. 75 Issue 4, p357
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thermodynamic properties of sodium dodecyl sulfate (SDS) in micellar aqueous solutions of L-serine and L-threonine were determined by fluorescence spectroscopy and dynamic light scattering techniques. The values of Gibbs free energy, enthalpy and entropy of the process of micelle formation were calculated using the critical micelle concentration and degree of dissociation. Changes in critical micelle concentration of SDS with the addition of amino acids were examined by both conductivity and pyrene I/ I ratio methods at different temperatures. The pyrene fluorescence spectra were used to study the change of micropolarity produced by the interaction of SDS with amino acids. The aggregation behavior of SDS was explained in terms of structural changes in mixed solutions. The data on dynamic light scattering suggest that size of SDS micelles was influenced by the presence of amino acids.
ACCESSION #
89151585

 

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