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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 54: Poster Session 3

CPP 54.53: Poster

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

Polyelectrolyte-4-Arm-Star-Shaped Hydrogels - Swelling Behavior in Different Solvent Conditions — •Ron Dockhorn^1,2 and Jens-Uwe Sommer^1,2 — ¹Leibniz-Institut für Polymerforschung Dresden e.V., D-01069 Dresden, Germany — ²Technische Universität Dresden, Institut für Theoretische Physik, D-01069 Dresden, Germany

We are studying hydrogels made of charged 2/4-functional point-like cross-linker, and non-charged, elastic 4-arm-star-shaped polymer in solutions of various salt concentrations. We focus on the swelling behavior by using the bond-fluctuation simulation method with electrostatic interaction. We apply both the explicit Ewald summation and the Debye-Hückel-approximation. A mean-field type model is used which combines the effects of counterions and excluded volume to understand the swelling properties of the gels and is compared to the simulation data.