Modelling the structure factor of concentrated surfactant solutions in foams

Many formulations involve a trapped kinetic state that provides some beneficial character to the formulation, yet the vast majority of studies on formulations focus on equilibrium states. Here, nanoscale structures present at dynamic interfaces in the form of air-in-water foams will be investigated. Previous work by us and others has shown that there are subtle changes in the scattering from transient foams formed from homologous series of alkyl sulphates, Pluronics, binary surfactant blends, as well as mixtures of these surfactants with polymers. Our most recent output has demonstrated a correlation between foam stability and the strength of the solution interaction which delineates the interfacial structures. To date, these studies have focused on pre-CMC systems; here we wish to explore more concentrated systems.