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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 31: Poster: Polymer Dynamics

CPP 31.8: Poster

Wednesday, March 24, 2010, 17:30–19:00, Poster C

Monte Carlo Study of Semiflexible Star-Branched Polymers in Good Solvents — •Ganna Berezovska and Alexander Blumen — Theoretical Polymer Physics, University of Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany

We study the influence of the excluded volume on the local properties of regular semiflexible 3- and 4-arm star polymers in a good solvent, by performing simulations in the framework of the bond fluctuation model. Stiffness is introduced through a bending potential between successive bond vectors and we focus in our investigation on the bond vector correlation functions. In agreement with the partially stretched, freely rotating chain arms model proposed by Guenza et al.[1] the stiffness of the arms becomes larger when approaching the core, but the influence of the core and the correlations between the arms decrease with increasing chain stiffness. Within the same arm the bond vectors show long range correlations which obey power law decays.

[1] M. Guenza, M. Mormino, A. Perico, Macromolecules, 24, 6168, (1991).