Berlin 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 13: Poster: Interfaces and Thin Films

CPP 13.10: Poster

Dienstag, 27. März 2012, 18:15–20:45, Poster A

Wetting of solid surfaces by microemulsions — •Stefan Wellert¹, Samantha Micciulla¹, Roland Steitz², Regine von Klitzing¹, and Thomas Hellweg³ — ¹TU Berlin, Str. d. 17. Juni 124, 10623 Berlin, Germany — ²Helmholtz Center Berlin, Hahn-Meitner Platz 1, 14109 Berlin, Germany — ³University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany

The increasing use of bio-inspired surfactants in microemulsions leads to an increasing interest in these thermodynamically stable self-assembled structures of oil, water and amphiphiles. Although the interaction between such microemulsions and solid surfaces is essential for many desired functionalities, only few is known about local structure and dynamics of a microemulsion in the vicinity of a solid surface. In particular, the influence of surface hydrophobicity, surfactant adsorption, bending elasticity of the amphiphilic interface and related properties have to be investigated in future studies. We used different methods to investigate the interaction of microemulsions with solid surfaces. Measurements of wetting properties at hydrophilic, partially hydrophobic and hydrophobic surfaces were combined with scattering methods resolving the structure of the microemulsion at the various solid surfaces. The resulting structural parameters and the observed dynamics in the vicinity of surfaces are compared to the corresponding results measured in the bulk phase with the undisturbed volume phase structure.