A Model for Monomer and Micellar Concentrations in Surfactant Solutions
This Demonstration shows monomer and micellar concentrations in surfactant solutions. In particular, it shows the effect of the relative transition width on the concentration of monomeric surfactant (blue) and micellized surfactant (red) near the critical micelle concentration (cmc). The horizontal axis represents the relative total surfactant concentration. The vertical dashed line at indicates the cmc. The dashed brown curve is a Gaussian function centered at the cmc with half width .
The concentrations are calculated with the model equations given in .
 W. Al-Soufi, L. Piñeiro, and M. Novo, "A Model for Monomer and Micellar Concentrations in Surfactant Solutions: Application to Conductivity, NMR, Diffusion, and Surface Tension Data," Journal of Colloid and Interface Science, 370(1), 2012 pp. 102–110. doi:10.1016/j.jcis.2011.12.037.