VAPOR-LIQUID-EQUILIBRIUM OF POLYMER-SOLUTIONS USING A CUBIC EQUATION OF STATE

Date

1994-07-01

Author

ORBEY, N
SANDLER, SI

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A recently proposed mixing rule has been combined with a cubic equation of state to correlate the vapor-liquid equilibria of various polymer + solvent and solvent + long chain hydrocarbon mixtures. We find that the two-parameter version of this model can correlate the solvent partial pressure in concentrated polymer solutions with high accuracy over a range of temperatures and pressures with temperature-independent parameters. For the solvent + long chain hydrocarbon systems, for which accurate vapor-phase concentrations are also important, the model is best used as a three-parameter correlation. Advantages of this approach are that it extends the application of cubic equations of state to polymer + solvent systems in a simple fashion and that generally only temperature-independent parameters are required which allow for accurate interpolation and extrapolation of available data.

Subject Keywords

Mixing rule, Mixtures

URI

https://hdl.handle.net/11511/65861

Journal

AICHE JOURNAL

DOI

https://doi.org/10.1002/aic.690400711

Collections

Department of Chemical Engineering, Article

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Citation Formats

N. ORBEY and S. SANDLER, “VAPOR-LIQUID-EQUILIBRIUM OF POLYMER-SOLUTIONS USING A CUBIC EQUATION OF STATE,” AICHE JOURNAL, pp. 1203–1209, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65861.