Abstract

AbstractA simplified thermodynamic perturbation theory‐dimer framework is used to derive an equation of state for hard‐sphere chains. The accuracy of the equation is tested against simulation data for hard‐sphere chains containing up to 201 hard‐sphere segments. A comparison is also presented with the results of other more sophisticated hard‐sphere chain equations of state. The equation reproduces the compressibility factor of hard‐sphere chains obtained from molecular simulation with a reasonable degree of accuracy. The equation can potentially form the theoretical backbone of an equation of state for real chainlike molecules. From a practical perspective, it has the advantage of being considerably simpler than alternative hard‐sphere chain equations.

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