Berlin 2015 – scientific programme

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BP: Fachverband Biologische Physik

BP 10: Colloids and Complex Liquids II (joint CPP/DY/BP)

BP 10.9: Talk

Monday, March 16, 2015, 17:15–17:30, C 130

Environmentally compatible microemulsion at solid surfaces: Wetting behavior and extraction properties — •Salomé Vargas Ruiz¹, Christoph Schulreich², Ramasia Sreich², Martin Jung³, Regine von Klizing¹, Thomas Hellweg², and Stefan Wellert¹ — ¹Stranski Laboratory, TU Berlin, Str. d. 17 juni 124, 10623 Berlin, Germany — ²Physical Chemistry III, University Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany. — ³Armed Forces Scientific Institute for NBC Protection, Humboldtstraße 1, 29633 Munster, Germany.

Microemulsions based on sugar surfactants and food grade oil are potential decontamination media for the remediation of sorptive surfaces exposed to highly toxic compounds (e.g nerves agents, pesticides). The main advantage of microemulsions relies on their capability to degradate the solubilized toxic compound by means of active ingredients hosted in the water phase. Although microemulsions have good performance on the detoxification process, the overall efficiency of the decontamination process is also determined by their ability to wet the treated surfaces and to extract the contaminants. In this study, we examined firstly the wettability and penetration properties of microemulsion formulated with sugar surfactant SL55 and methyl oleate oil, and secondly we evaluated their ability to extract lipophilic contaminants via spectroscopic and chromatographic techniques. Here, the formulated microemulsions can wet and penetrate hydrophobic and hydrophilic sorptive surfaces and their extraction properties are greatly influenced by their structure and oil content.