Characterization of surfactant
Characterization by an interfacial analysis of the surfactant polyglyceryl-10 monooleate was part of a comprehensive product evaluation study. Within the scope of a published study in collaboration with Lonza Ltd. (Basel, Switzerland) and Azelis (Azelis Deutschland Kosmetik GmbH, Moers, Germany), Krüss tested the surfactant polyglyceryl-10 monooleate for its suitability as a skin-compatible emulsifier for low-viscosity sprays and lotions and as a builder for liposomal structures.
The aspect of skin compatibility in particular makes it necessary to achieve the desired stabilization of the emulsion with the smallest possible amount of active ingredient. In particular, the number of free surfactant monomers not bound in micelles or liposomes should be as low as possible. Against this background, the determination of the critical micelle concentration (CMC) and the surfactant concentration necessary for the maximum reduction of the interfacial tension between hydrophilic and hydrophobic phase played an important role in the evaluation of the emulsifier.
The application report is available for download