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 language | English (US) |
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Pages (from-to) | 299-303 |
Number of pages | 5 |
Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
Volume | 206 |
Issue number | 1-3 |
DOIs | |
State | Published - 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