Dresden 2011 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 38: Poster: Colloids and Complex Liquids
CPP 38.10: Poster
Mittwoch, 16. März 2011, 17:00–19:00, P2
Efficiency boosting in application: The influence of Poloxamers on skin friendly microemulsions for decontamination — •Sebastian Höhn1, Ralph Neubauer1, Christoph Schulreich1, and Thomas Hellweg2 — 1Physikalische Cemie 1, Universität Bayreuth, Deutschland — 2Physikalisch und Biophysikalische Chemie (PC III), Universität Bielefeld, Deutschland
Bicontinuous microemulsions based on sugar surfactants are the promising media for decontamination. Various toxic chemicals and most chemical warfare agents are hydrophobic while most degradation agents are hydrophilic. Microemulsions offer an oil and a water phase, separated by a huge internal interface which allows interaction of the enzymes with the warefare agents. One limiting factor for applications is the high demand of surfactant to form stable microemulsions. By adding small amounts of amphiphilic diblock copolymers the surfactant efficiency is dramatically enhanced (efficiency boosting effect). In this contribution the influence of different commercially available triblock copolymers (Poloxamers) on two systems is shown. Due to the fact, that the added block copolymers are part of the amphiphilic interface, where the decontamination takes place the influence of different polymers on the interfacial film is of high interest. Therefore, we investigate the model system based on n-decyl-β-D-maltoside (C10G2) and cyclohexane by SAXS and SANS. In order to compare this model system with a technical system we changed to Simulsol SL55 (C10−12G1.3, Seppic). Upon addition of small amounts of poloxamer an increase of the surfactant efficiency is observed.