Diffraction by macromolecular fluids

Alfred H. Narten, Anton Habenschuss, Kevin G. Honnell, John D. McCoy, John G. Curro, Kenneth S. Schweizer

Research output: Contribution to journalArticlepeer-review


X-Ray diffraction data on n-alkane fluids ranging from n-butane to polyethylene are analysed to yield the relative contributions from intra- and inter-molecular scattering. The intramolecular contributions are calculated from an exact rotational-isomeric-state model at short length scales, and approximated by a semiflexible chain model on global scales. With increasing chain length, the intermolecular pair distribution functions show a general decrease in short-range structure along with the predicted self-screening, or de Gennes 'correlation hole', whereby sites on different chains are partially excluded from close approach to sites on a given chain.

Original languageEnglish (US)
Pages (from-to)1791-1795
Number of pages5
JournalJournal of the Chemical Society, Faraday Transactions
Issue number13
StatePublished - 1992

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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