Effective interaction between star polymers

Details Effective interaction between star polymers Effective interaction between star polymers

1999-04-30

arxiv.org/abs/cond-mat/9904444v2

Macromolecules 32, 4470 (1999)

Physics

Condensed Matter

Soft Condensed Matter

final version as published, 9 pages + 5 ps-figures

Scientific paper

10.1021/ma981844u

The distance-resolved effective interaction between two star polymers in a good solvent is calculated by Molecular Dynamics computer simulations. The results are compared with a pair potential proposed recently by Likos et al. [Phys. Rev. Lett. 1998, 80, 4450] which is exponentially decaying for large distances and crosses over, at the corona diameter of the star, to an ultrasoft logarithmic repulsion for small distances. Excellent agreement is found in a broad range of star arm numbers.

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