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

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Focus: Wetting on smooth and rough surfaces: From spreading to superhydrophobicity

CPP 30.1: Poster

Mittwoch, 13. März 2013, 16:30–18:30, Poster C

Polymer brushes in poor solvent - A Monte Carlo Study — •Christoph Jentzsch^1,2 and Jens-Uwe Sommer^1,2 — ¹Leibniz-Institut für Polymerforschung Dresden, Germany — ²TU-Dresden, Intitut für theoretische Pyhsik, Germany

We use a new variant of the bond fluctuation model with explicit solvent to study polymer brushes under poor solvent conditions. Extensive simulations were performed in order to cover a wide range of grafting densitys for large systems. For high grafting densitys we observe a dense uniform brush. By decreasing the grafting density, we observe stable holes penetrating through the brush. A further decrease of the grafting density leads to a semicontinous morphology due to a segregation between the solvent and the polymers. For very low grafting densitys we observe octopus micelles of different sizes. We investigate those regimes and their transitions.