Effect of Image Forces on Polyelectrolyte Adsorption at a Charged Surface
arXiv:cond-mat/0406088 · doi:10.1103/PhysRevE.70.051802
Abstract
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.
19 pages - 7 eps figs - RevTex 4 - submitted for publication
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