Regensburg 2010 – scientific programme
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BP: Fachverband Biologische Physik
BP 5: Posters: Biopolymers and Biomaterials
BP 5.3: Poster
Monday, March 22, 2010, 17:15–20:00, Poster B1
Phase behaviour and structure of enzyme containing skin friendly microemulsions for decontamination — •Ralf Stehle1, Christoph Schulreich1, Stefan Wellert2, Christina Diederich1, Andre Richardt3, Marc-Michael Blum4, and Thomas Hellweg1 — 1Universität Bayreuth, Physikalische Chemie I, Universitätsstr. 30, D-95444 Bayreuth — 2Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Glienicker Str. 100, D-14109 Berlin — 3Armed Forces Scientific Institute for NBC-Protection, Humboltstr. 1, D-29633 Munster — 4Bundeswehr, Wissenschaftliche Dienste, Ledererstr. 23, D-80331 München
Microemulsions are promising media for decontamination. Various toxic chemicals and most chemical warfare agents are hydrophobic and can only be solubilized in organic solvents, while most degradation agents are water soluble. Microemulsions allow both, the solubilisation of the lipophilic toxins and their corresponding hydrophilic degradation reagents. For human skin decontamination microemulsions have to be skin friendly.
In this contribution, a system composed of a sugar surfactant and an oil, commonly used in cosmetics, is presented.
Unlike other systems based on skin friendly oils, the bicontinuous phase of this microemulsion contains much lower concentration of sugar surfactant. The phase behaviour is studied and the structure of the bicontinuous phase is characterized by small angle neutron scattering (SANS), and dynamic light scattering (DLS). Properties of the enzyme and its effect on the microemulsion are investigated.