Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: POSTER: Polymer Physics
CPP 8.2: Poster
Montag, 26. März 2007, 16:00–18:00, Poster B
Simulations of Flexible and Semiflexible Polymers: Dynamic and Viscoelastic Properties — •Julian Schneider1,2, Alexander Blumen1, and Martin Steinhauser2 — 1Albert-Ludwigs-Universität, Theoretische Polymerphysik, Freiburg — 2Fraunhofer Institut für Kurzzeitdynamik (EMI), Freiburg
Using Molecular-Dynamics-Simulations we investigate the dynamic and viscoelastic properties of single chains and of melt systems consisting of flexible and semiflexible units. In order to find a unified description for such chains we performed simulations with different polymer models and compared the numerical results to standard models. We find good agreement with the scaling-predictions of the Rouse-Model for flexible chains with no significant dependence of the spring-type connecting the beads. For semiflexible chains we observe a t−5/4-decay in the time-dependent shear modulus as recently predicted.