The behavior of salt-free polyelectrolyte solutions at charged surfaces

Rakwoo Chang, Arun Yethiraj

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The properties of polyelectrolytes at oppositely charged surfaces are studied using Monte Carlo (MC) simulations and integral equation theory. The polymer molecules are modeled as chains of charged spheres, the counterions and co-ions are charged spheres, and the surface is smooth and uniformly charged. The polymer concentration in the simulations is strongly peaked at the surface, and this is accompanied by a depletion of polymers at larger distances from the surface. The thickness of the adsorbed layer decreases with increasing polymer concentration or surface charge density, but the total adsorbed amount displays a non-monotonic dependence on polymer concentration. The integral equation theory predictions are in qualitative agreement with the MC results.

Original languageEnglish
Pages (from-to)331-336
Number of pages6
JournalProgress in Organic Coatings
Issue number3-4
StatePublished - Sep 2003


  • Charged surface
  • Integral equation theory
  • Monte Carlo simulation
  • Polyelectrolyte


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