Density inhomogeneities of highly charged polyelectrolyte solutions confined between uncharged and nonadsorbing walls

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Monte Carlo simulations are used to study the density profile of dilute and semidilute solutions of highly charged polyelectrolytes confined between uncharged and nonadsorbing walls. We find that the density profile displays oscillations whose wavelength corresponds to that of correlations in bulk polyelectrolyte solutions. The amplitude of the oscillations increases with chain molecular weight. The density oscillations observed cannot be attributed to the confining walls, poor backbone solubility, colloidal-like ordering, or nonuniform distribution of counterions. We conclude that the correlations in polyeletrolyte solutions must be due to a balance between the segment-segment electrostatic interactions and the chains' translational entropy.

Original languageEnglish
Pages (from-to)3475-3478
Number of pages4
JournalLangmuir
Volume14
Issue number13
Publication statusPublished - 23 Jun 1998
Externally publishedYes

Fingerprint

Polyelectrolytes
inhomogeneity
oscillations
Entropy
profiles
Coulomb interactions
Static Electricity
confining
Solubility
molecular weight
solubility
Molecular Weight
Molecular weight
entropy
electrostatics
Wavelength
wavelengths
simulation
interactions

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Density inhomogeneities of highly charged polyelectrolyte solutions confined between uncharged and nonadsorbing walls. / Carignano, Marcelo; Dan, N.

In: Langmuir, Vol. 14, No. 13, 23.06.1998, p. 3475-3478.

Research output: Contribution to journalArticle

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