Polymer depletion interaction between two parallel repulsive walls

Details Polymer depletion interaction between two parallel repulsive walls Polymer depletion interaction between two parallel repulsive walls

2001-01-04

arxiv.org/abs/cond-mat/0101049v2

Phys. Rev. E 63, 041803 (2001)

Physics

Condensed Matter

Soft Condensed Matter

17 pages, 3 figures. Final version as published

Scientific paper

10.1103/PhysRevE.63.041803

The depletion interaction between two parallel repulsive walls confining a dilute solution of long and flexible polymer chains is studied by field-theoretic methods. Special attention is paid to self-avoidance between chain monomers relevant for polymers in a good solvent. Our direct approach avoids the mapping of the actual polymer chains on effective hard or soft spheres. We compare our results with recent Monte Carlo simulations [A. Milchev and K. Binder, Eur. Phys. J. B 3, 477 (1998)] and with experimental results for the depletion interaction between a spherical colloidal particle and a planar wall in a dilute solution of nonionic polymers [D. Rudhardt, C. Bechinger, and P. Leiderer, Phys. Rev. Lett. 81, 1330 (1998)].

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