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Critical compressibility factors for chain molecules

Lue, L. and Friend, D.G. and Elliott, J.R. (2000) Critical compressibility factors for chain molecules. Molecular Physics, 98 (18). pp. 1473-1477. ISSN 0026-8976

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Abstract

For many proposed equations of state for fluids composed of chain-like molecules, the compressibility factor is related to the chain number concentration only through the total monomer concentration. For these theories, the virial coefficients do not scale correctly with the chain molecular weight in the long chain limit, which can lead to a poor description of the phase diagram. In addition, for equations of state that are analytical at the critical point, it is found that the critical compressibility factor approaches 1/3 in the limit of infinitely long chains, contrary to experimental trends. Appropriate scaling leads to the proper trend for the compressibility factor,as demonstrated with a simple equation.

Item type: Article
ID code: 38479
Notes: English Article 352KE MOL PHYS
Keywords: polymer-solutions, equation, fluids, state, simulation, universality, equilibria, Chemistry, Physical and theoretical chemistry, Molecular Biology, Physical and Theoretical Chemistry, Biophysics, Condensed Matter Physics
Subjects: Science > Chemistry
Science > Chemistry > Physical and theoretical chemistry
Department: Faculty of Engineering > Chemical and Process Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 13 Mar 2012 16:30
    Last modified: 05 Sep 2014 04:32
    URI: http://strathprints.strath.ac.uk/id/eprint/38479

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