首页|Influence of an anionic hydrotrope on thermophysical properties of an anionic surfactant sodium dodecyl sulfate
Influence of an anionic hydrotrope on thermophysical properties of an anionic surfactant sodium dodecyl sulfate
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NSTL
Elsevier
Herein we report micellization behavior of anionic surfactant, sodium dodecyl sulfate (SDS) in presence and absence of anionic hydrotrope (1,3-Benzenedisulfonic acid disodium salt (BDS)) in aqueous medium. Critical micelle concentrations (CMC) of mixed surfactant-hydrotrope systems were determined by conductometric technique. CMC values of surfactant-hydrotrope decrease with increasing hydrotrope concentration. Interactions between hydrotrope and surfactant are synergistic in nature. We also deduced thermodynamic parameters of micellization (viz., Delta G degrees(m), Delta H degrees(m), and Delta S degrees(m)). The effect of hydrotrope and temperature on different thermophysical properties have been discussed. Experimental techniques like FT-IR and NMR were employed to reveal the non-covalent interactions of mixed surfactant-hydrotrope systems.
NSTL
Elsevier
