Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 21: POSTERS Colloids, Nanoparticles and Aggregates

CPP 21.28: Poster

Mittwoch, 27. Februar 2008, 16:00–18:30, Poster A

From gas--liquid to liquid crystalline phase behavior via anisotropic attraction: A computer simulation study — •Wen-Ze Ouyang and Reinhard Hentschke — Bergische Universität Wuppertal

The phase behavior of a continuum molecular model for self-assembling semiflexible equilibrium polymers is studied via Monte Carlo simulation and molecular dynamics. We investigate the transfer from ordinary gas--liquid coexistence to the appearance of liquid crystallinity driven by excluded volume interaction between rodlike aggregates. The transfer between the two types of phase behavior is governed by a tunable anisotropic attractive interaction between monomer particles. The relation to dipolar fluid models, which are also known to form reversible chains, is discussed.