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Berlin 2015 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

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

BP 10.9: Vortrag

Montag, 16. März 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 Wellert11Stranski 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.

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