Computer simulation studies on overlapping polymer chains confined in narrow channels

Iwao Teraoka, Yongmei Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Conformation of polymer chains strongly confined in a narrow channel space was studied over a broad range of polymer volume fractions φ using lattice Monte Carlo simulations. The longitudinal component of the chain dimension decreased in a power law of ∼φ-1 as φ exceeded the overlap volume fraction. The conformation changed from the one extended along the channel to a random coil. The change occurred without much overlap between adjacent chains. As the conformational transition was completed, the chains started to penetrate each other. Contraction of the chains became more gradual, and eventually the longitudinal component of the chain dimension approached that of the unconfined chains with the overall chain dimension being smaller than that of the unconfined chains. Predictions of the scaling theory were thus confirmed with additional detailed information on the state of confined chains in each regime of characteristic φ dependence of chain dimensions.

Original languageEnglish (US)
Pages (from-to)3835-3843
Number of pages9
JournalPolymer
Volume45
Issue number11
DOIs
StatePublished - May 2004

Keywords

  • Channel
  • Confinement
  • Semidilute solutions

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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