A Model for Monomer and Micellar Concentrations in Surfactant Solutions

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

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 .

Contributed by: Wajih Al-Soufi (December 2014)
Universidade de Santiago de Compostela
Open content licensed under CC BY-NC-SA



The concentrations are calculated with the model equations given in [1].


[1] 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.

Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.