Density fluctuation correlation length in polymer fluids

R. Koshy, T. Desai, P. Keblinski, J. Hooper, K. S. Schweizer

Research output: Contribution to journalArticlepeer-review


MD simulation and PRISM integral equation theory was employed to study collective density correlations in athermal polymer solutions over a wide range of polymer concentrations. At low density the well known behavior that polymer fluids exhibit monotonic exponentially decaying density correlations was found, with the correlation length decreasing with increasing density. However, when the correlation length became comparable with the monomer size, the density correlation function decayed in a oscillator manner, and the correlation length grew with increasing density.

Original languageEnglish (US)
Pages (from-to)7599-7603
Number of pages5
JournalJournal of Chemical Physics
Issue number14
StatePublished - Oct 8 2003

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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