Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 11: POSTER Disperse Polymer Systems
CPP 11.28: Poster
Dienstag, 28. März 2006, 17:00–19:00, P3
Phase structures of oilcontinuous microemulsions towards new decontamination media — •S. Wellert1, H. Imhof1, T. Hellweg1, M. Dolle2, H.-J. Altmann2, and A. Richardt2 — 1TU Berlin, Stranski-Lab., Strasse des 17. Juni 112, D-10623 Berlin — 2Armed Forces Scientific Institute for Protection Tech., P.O.Box 1142, D-29623 Munster
Removal of chemical warfare agents from coated metal surfaces is an important issue in civil protection. In this purpose the German army uses a macroemulsion based on the technical surfactant Marlowet IHF in mixture with water, perchlorethylene and hypochlorite. Inherently, macroemulsions are unstable and therefore the formation of a microemulsion with the same surfactant is desirable. Microemulsions are macroscopically homogeneous and thermodynamically stable mixtures of water, oil and surfactants and exhibit various unique properties interesting for decontamination applications. Mixtures of water, perchlorethylene, hypochlorite, the emulsifier Marlowet IHF and the cosurfactant 2-propanol are under investigation in order to form oil continuous microemulsions. We present the phase behavior of the four-component-system as well as different cuts through the phase tetrahedron containing stable one phase regions. Alternatively we used AOT instead of the established emulsifier. The identified stable one-phase regions were studied by dynamic light scattering to get knowledge about the formed microstructures of these microemulsions.