Berlin 2015 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 46: P11: Wetting, Micro and Nano Fluidics

CPP 46.2: Poster

Wednesday, March 18, 2015, 10:00–13:00, Poster A

Quantifying dynamic wetting of surfactant solutions — Franziska Henrich, Dorota Truszkowska, Hans-Jürgen Butt, and •Günter K. Auernhammer — MPI Polymer Research, Mainz, Germany

Although in recent years there have been efforts to gain better understanding on the dynamic wetting of surfactant solutions [1,2], the flow profile near the 3-phase contact line still is not entirely known. In the hydrodynamic model of the flow profile, the diffusion of surfactant to the surface plays an important role, since in this model surfactant molecules flows due to gradient of the surface tension to the new surface near the 3-phase contact line. In this contribution we present methods to determine the dynamic contact angle, the flow profile and the surfactant concentration. We discuss the characteristic changes due to different surfactants and surface structure.

[1]Fell, D. et al. Langmuir (2011): 27(6) 2112-2117

[2] Fell, D. et al. Colloid and Polymer Science (2013), 291(2) 361-366