Abstract
Surfactants are used for etching track membranes to form pores of peculiar geometries with the purpose of, e.g., producing membranes with enhanced performance. The knowledge of the state of surfactant molecules in process solutions, in particular, the regularities of their aggregation, is of importance for understanding the mechanisms of surfactant action on track etching processes. This work presents the data on sodium dodecyl( sulfophenoxy)benzene sulfonate and nonyl benzene deca(ethylene oxide) micellization in neutral and alkaline electrolyte solutions of different concentrations. The measurements are carried out using the small-angle neutron scattering. It is shown that cylindrical (ellipsoid) micelles are formed in the solutions. Characteristic sizes of micelles are determined as functions of surfactant and added electrolyte concentrations. The correlation of the data obtained with the geometry of track nanopores and the dynamics of their etching in surfactant-containing solutions is discussed.
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