Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.43: Poster
Montag, 1. April 2019, 17:30–19:30, Poster B1
Anomalous Diffusion in Reversible Networks — •Kiran Suresh Kumar1,2, Jens-Uwe Sommer1,2, and Michael Lang1 — 1Leibniz-Institut für Polymerforschung Dresden, Institut Theorie der Polymere, Hohe Strasse 6, 01069 Dresden, Germany — 2Institute für Theoretische Physik, Technische Universität Dresden, Zellescher Weg 17, 01069 Dresden, Germany
Recent experiments and simulation studies find an anomalous super diffusive regime in reversible networks by analyzing Forced Rayleigh Scattering (FRS) data [1-3]. The molecular origin of this super diffusive regime is not yet fully understood. In our contribution, we approach this problem by computer simulations of FRS experiments in reversible networks based upon the Bond Fluctuation Model and additional stochastic simulations. We analyze the dynamics of individual molecules and correlate these with bond association and dissociation times. We further discuss the dependence of collective observables as accessible in FRS experiments with molecular parameters of the reversible gel.
[1] Tang, S.; Wang, M.; Olsen , B. D. J. Am. Chem. Soc. 2015, 137, 3946-3957.
[2] Tang, S.; Habicht, A.; Li, S.; Seiffert, S.; Olsen, B. D. Macromolecules 2016, 49, 5599-5608.
[3] Ramirez, J.; Dursch, T. J.; Olsen , B. D. Macromolecules 2018, 51, 2517-2525.