Reptation of star polymers in a network: Monte Carlo results of diffusion coefficients

Details Reptation of star polymers in a network: Monte Carlo results of diffusion coefficients Reptation of star polymers in a network: Monte Carlo results of diffusion coefficients

1998-11-04

arxiv.org/abs/cond-mat/9811057v1

Physics

Condensed Matter

7 pages, to appear in Macromolecules

Scientific paper

10.1021/ma981330v

We report on Monte Carlo results of diffusion coefficients of lattice star polymers trapped inside a fixed network (de Gennes model). It is found that our data are in agreement with the Helfand-Pearson exponential factor \alpha=0.29. For the pre-exponential power law exponent we find \beta=2. In contrast to existing theoretical predictions, we find that the number of arms f leads to a pre-exponential factor of the form exp(-0.75 f).

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