Polymer chains in good solvent facing impenetrable walls: What is the distance to the wall in lattice Monte Carlo simulations

Iwao Teraoka, Peter Cifra, Yongmei Wang

Research output: Contribution to journalArticle

Abstract

Monomer density profile of polymer chains in the good solvent condition near an impenetrable wall was examined in lattice Monte Carlo simulation. It was found that a positive penetration depth γ is necessary for the density profile to follow the prediction of the scaling theory. In dilute solutions, γ was 0.13-0.22 of the lattice unit from a weak confinement to a strong confinement. With an increasing concentration, γ increased gradually to a value close to 0.36. These findings corroborate our hypothesis that the need of the positive γ and a greater γ at higher concentrations result from non-even chain transport due to a large difference in site occupancy, especially at higher concentrations.

Original languageEnglish (US)
Pages (from-to)299-303
Number of pages5
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume206
Issue number1-3
DOIs
StatePublished - Jul 9 2002

Keywords

  • Confinement
  • Density profile
  • Monte Carlo simulation
  • Polymer solution
  • Slit

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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