Abstract
A modified fluid-lattice theory of fluids considering a finite quasi-lattice coordination number and a constant lattice site volume for all r-mers is developed. The theory is tested against experimental information on specific volumes, vapor pressures, orthobaric densities and heats of vaporization of pure components. Some common polymers and some typical polymer solvents have been chosen for testing the theory. The theoretical treatment has been extended to mixtures and tested against experimental data on volumes of mixing, heats of mixing, and χ interaction parameters of polymer solutions. Results have been compared with those obtained with a two-parameter new Flory theory and with the three-parameter new Huggins theory. Both for pure components and for mixtures, the effect of introducing a non-random quasi-chemical correction is discussed.
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Panayiotou, C., Vera, J. Statistical Thermodynamics of r-Mer Fluids and Their Mixtures. Polym J 14, 681–694 (1982). https://doi.org/10.1295/polymj.14.681
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DOI: https://doi.org/10.1295/polymj.14.681
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