Abstract
Abstract Industrial processes become faster and faster. The corresponding formulations have to keep pace with new technical solutions like spray coating in paper production or the substitution of isopropanol in fountain solutions for offset printing. Fast diffusion of amphiphiles to interfaces and the formation of interfacial films to lower the interfacial energy are the fundamental molecular mechanisms which have to be optimised for all high speed spraying and wetting processes. Our results show that the interfacial tension at water/air and at water/solid interfaces primarily depends on the concentration of free surfactants. Micelles act as depots for free surfactants which adjust the concentration in solution as soon as surfactants disappear by interface adsorption. By using synergistic mixtures it is possible to extend the application range of dynamic surfactants towards detergency by combining fast adsorption at interfaces with micellar properties.
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