- International Journal of Thermodynamics
- Vol: 21 Issue: 3
- Crystal Violet Partitioning in Anionic Surfactants Micellar Media: UV-Visible Spectroscopy Study
Crystal Violet Partitioning in Anionic Surfactants Micellar Media: UV-Visible Spectroscopy Study
Authors : S. E. OLASENİ, O. A. AKEREMALE, M. O. OSUNDİYA, C. O. ABOLUWOYE, A. ORUNESAJO, O. E. OYENEYİN, E. O. ONİYA
Pages : 136-142
Doi:10.5541/ijot.414585
View : 4 | Download : 1
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