Effect of Image Forces on Polyelectrolyte Adsorption at a Charged Surface

Details Effect of Image Forces on Polyelectrolyte Adsorption at a Charged Surface Effect of Image Forces on Polyelectrolyte Adsorption at a Charged Surface

2004-06-03

arxiv.org/abs/cond-mat/0406088v1

Physics

Condensed Matter

Soft Condensed Matter

19 pages - 7 eps figs - RevTex 4 - submitted for publication

Scientific paper

10.1103/PhysRevE.70.051802

The adsorption of flexible and highly charged polyelectrolytes onto oppositely charged planar surfaces is investigated by means of Monte Carlo simulations. The effect of image forces stemming from the dielectric discontinuity at the substrate interface is considered. The influence, at fixed polyelectrolyte volume fraction, of chain length and surface-charge density is also considered. A detailed structural study, including monomer and fluid charge distributions, is provided. It is demonstrated that image forces can considerably reduce the degree of polyelectrolyte adsorption and concomitantly inhibit the charge inversion of the substrate by polyelectrolytes.

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