We present an analysis of the thermodynamic properties of chain molecules formed from Yukawa segments using the statistical associating fluid theory with interactions of variable range (SAFT-VR) and the high-temperature expansion of the mean-spherical solution (MSA-HTE) to the Ornstein–Zernike equation for a simple Yukawa fluid. The SAFT-VR expressions derived previously for this system allow the MSA-HTE equation of state to be reformulated in terms of first-order perturbation quantities, thus improving its accuracy. Furthermore, the MSA-HTE solution provides a full theoretical derivation of the perturbation theory used in SAFT-VR, together with a completely analytical equation of state for chain molecules composed of segments which interact via the Yukawa potential.
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Research Article| November 08 1999
An analytical equation of state for chain molecules formed from Yukawa segments
Lowri A. Davies;
Lowri A. Davies, Alejandro Gil-Villegas, George Jackson; An analytical equation of state for chain molecules formed from Yukawa segments. J. Chem. Phys. 8 November 1999; 111 (18): 8659–8665. https://doi.org/10.1063/1.480205
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