Crystal Violet Partitioning in Anionic Surfactants Micellar Media: UV-Visible Spectroscopy Study

Authors : S. E. Olaseni, O. A. Akeremale, M. O. Osundiya, C. O. Aboluwoye, A. Orunesajo, O. E. Oyeneyin, E. O. Oniya

Pages : 136-142

Doi:10.5541/ijot.414585

View : 11 | Download : 8

Publication Date : 2018-09-01

Article Type : Research

Abstract :Simple and differential Uv/Visible spectroscopic method were used to monitored the interaction of Sodium dodecyl sulphate (SDS) and Sodium – N - laouryl sarcosinate (SLS) with crystal violet (CV) in pre-micellar and post-micellar concentration range. The results showed that the peak of CV at 590nm was unperturbed in CV/SDS system, but the intensity increased as surfactant concentration increased, unlike in the CV/SLS system. This is an indication that strong interaction occurred between CV and surfactants molecule. Absorption data were also used to obtain partition coefficient ( ) values and binding constant ( ) values from which the free energy of partition ( ) and the free energy of binding ( ) were estimated. From the partition coefficient ( ) values, it could be inferred that the solubilization of CV is more pronounced and spontaneous in the SDS than in the SLS micellar media.
Keywords : Partitioning coefficient, surfactant, sarcosinate, binding constant