Regensburg 2013 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Organic films and electronics, photoorganics; Nanostructures; Plasmonics and nanooptics, Surface chemical reactions and heterogeneous catalysis, Surface dynamics )
O 36.15: Poster
Dienstag, 12. März 2013, 18:15–21:45, Poster B2
Nanoparticles droplets on a polymer brush studied by dissipative particle dynamics simulations — •Olga Guskova1 and Christian Seidel2 — 1Leibniz Institute of Polymer Research, Dresden, Germany — 2Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
We use DPD simulations to investigate the self-assembly of nanoparticles (NPs) at a polymer brush/solvent (B/S) interface. Depending on the strengths of both the NP-solvent interaction and the NP-polymer one, NPs randomly distributed in solvent volume migrate to the polymer surface where they aggregate into droplets because of their solvophobic nature. We analyze the shape of the floating droplets as well as their effect on the free brush surface. In addition, the contact angles of NP droplets at the B/S interface are extracted from our simulations.