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DY: Fachverband Dynamik und Statistische Physik

DY 32: Soft Matter II

DY 32.6: Vortrag

Freitag, 30. März 2012, 11:15–11:30, MA 144

Soft tetramer model for diblock copolymers — •Thomas Michael and Wolfgang Paul — Institut für Physik, Martin-Luther-Universität, 06099 Halle

Analytical results for a soft-particle model for diblock copolymers are presented. The tetramer model consists of a soft dumbbell for each block. The overall four beads interact by an effective soft-particle pair-potential. The interaction length is finite. The analytical calculations result in a phase diagram of the melt depending on the composition of the diblock copolymer and the temperature. The corresponding collective structure factor of the polymer melt is calculated in RPA. The compressible and incompressible case is discussed and the results are compared to Monte-Carlo simulations [1] based on the same model and to experiments.
[1] C. Gross and W.Paul, Soft Matter, 6, 3273 (2010)