Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 54: Poster Session 3

CPP 54.2: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Simulation of polymer melts in confined geometries — •Andre Galuschko, Marco Werner, Michael Lang, and Jens-Uwe Sommer — Leibniz-Institut für Polymerforschung Dresden, Hohe Strasse 6, 01069 Dresden, Deutschland

Polymers in their disordered liquid state show unique viscoelastic properties when the chains start to entangle. The topological constrains created by interchain excluded volume and uncrossability, lead for a probing chain to move within a tube. We employ the Bond Fluctuation Model to simulate the diffusion dynamics of long polymer chains at melt conditions. When the melt becomes confinement between two ideal walls, the bulk limit is reobtained, when walls seperation becomes large compared the free chain extension. With increasing confinement the diffusion accelerates due to change of entanglement density and chain overlap density.