Dresden 2011 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 34: Poster: Elastomers and Gels
CPP 34.2: Poster
Mittwoch, 16. März 2011, 17:00–19:00, P2
Computer simulation of Olympic Gels — •Jakob Fischer1,2, Michael Lang1, and Jens-Uwe Sommer1,2 — 1Leibniz Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany — 2Institut für Theoretische Physik, Technische Universität Dresden
A polymer gel formed by ring polymers that are connected exclusively through topologic entanglements is called "Olympic Gel", since it resembles the structure of the Olympic Rings. Olympic gels are interesting materials for theorists, since they have the potential to study the effect of entanglements directly. One of the goals of our work is to study the formation of such materials, in particular we want to investigate whether the idea of Raphael et al. [1] (step-wise creation using different chain lengths) or of Pickett [2] (selectively reactive end-groups) are more promising for an experimental study. For comparison, "ideal" model gels will be created in the simulations by allowing the polymer strands to freely cross each other. The structure of the gel will be investigated using tools of knot theory [3] and the gel point and elasticity of the material will be estimated based on the connectivity of the rings and tube models of entangled polymers.
[1] E. Raphael, C. Gay. P.G. De Gennes, JStatPhys. 89, 111 (1997).
[2] G.T. Pickett, EuroPhysLett 76, 616 (2006).
[3] M. Lang, W. Michalke, S. Kreitmeier, JCompPhys 185, 549 (2003).