Henry constants in polymer solutions with the van der Waals equation of state

Sotiris Bithas, Nikolaos Kalospiros, Georgios Kontogeorgis, Tassios Dimitrios

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The simple der Waals equation of state, as extended to polymer systems, is applied to the correlation and prediction of Henry constants in polymer solutions comprising five polymers and many nonpolar and polar solvents, including supercritical gases. The correlation achieved with one adjustable parameter is satisfactory, with typical errors within the experimental uncertainty and comparable to those with the more complex Perturbed Hard Chain Theory-based equations of state with the same number of adjustable parameters. A predictive scheme for calculating Henry constants is also presented, which is a corresponding-states correlation for a dimensionless Henry constant defined based on the van der Waals equation of state. Satisfactory results-often close to the ones from the one-parameter correlation-are obtained for all systems investigated in this work. Compared with literature models that have been applied to the prediction of Henry constants In polymers, this scheme is simpler and applicable to supercritical gas-containing systems.
Original languageEnglish
JournalPolymer Engineering and Science
Volume36
Issue number2
Pages (from-to)254-261
ISSN0032-3888
DOIs
Publication statusPublished - 1996

Cite this

Bithas, Sotiris ; Kalospiros, Nikolaos ; Kontogeorgis, Georgios ; Dimitrios, Tassios. / Henry constants in polymer solutions with the van der Waals equation of state. In: Polymer Engineering and Science. 1996 ; Vol. 36, No. 2. pp. 254-261.
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abstract = "The simple der Waals equation of state, as extended to polymer systems, is applied to the correlation and prediction of Henry constants in polymer solutions comprising five polymers and many nonpolar and polar solvents, including supercritical gases. The correlation achieved with one adjustable parameter is satisfactory, with typical errors within the experimental uncertainty and comparable to those with the more complex Perturbed Hard Chain Theory-based equations of state with the same number of adjustable parameters. A predictive scheme for calculating Henry constants is also presented, which is a corresponding-states correlation for a dimensionless Henry constant defined based on the van der Waals equation of state. Satisfactory results-often close to the ones from the one-parameter correlation-are obtained for all systems investigated in this work. Compared with literature models that have been applied to the prediction of Henry constants In polymers, this scheme is simpler and applicable to supercritical gas-containing systems.",
author = "Sotiris Bithas and Nikolaos Kalospiros and Georgios Kontogeorgis and Tassios Dimitrios",
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Henry constants in polymer solutions with the van der Waals equation of state. / Bithas, Sotiris; Kalospiros, Nikolaos; Kontogeorgis, Georgios; Dimitrios, Tassios.

In: Polymer Engineering and Science, Vol. 36, No. 2, 1996, p. 254-261.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Henry constants in polymer solutions with the van der Waals equation of state

AU - Bithas, Sotiris

AU - Kalospiros, Nikolaos

AU - Kontogeorgis, Georgios

AU - Dimitrios, Tassios

PY - 1996

Y1 - 1996

N2 - The simple der Waals equation of state, as extended to polymer systems, is applied to the correlation and prediction of Henry constants in polymer solutions comprising five polymers and many nonpolar and polar solvents, including supercritical gases. The correlation achieved with one adjustable parameter is satisfactory, with typical errors within the experimental uncertainty and comparable to those with the more complex Perturbed Hard Chain Theory-based equations of state with the same number of adjustable parameters. A predictive scheme for calculating Henry constants is also presented, which is a corresponding-states correlation for a dimensionless Henry constant defined based on the van der Waals equation of state. Satisfactory results-often close to the ones from the one-parameter correlation-are obtained for all systems investigated in this work. Compared with literature models that have been applied to the prediction of Henry constants In polymers, this scheme is simpler and applicable to supercritical gas-containing systems.

AB - The simple der Waals equation of state, as extended to polymer systems, is applied to the correlation and prediction of Henry constants in polymer solutions comprising five polymers and many nonpolar and polar solvents, including supercritical gases. The correlation achieved with one adjustable parameter is satisfactory, with typical errors within the experimental uncertainty and comparable to those with the more complex Perturbed Hard Chain Theory-based equations of state with the same number of adjustable parameters. A predictive scheme for calculating Henry constants is also presented, which is a corresponding-states correlation for a dimensionless Henry constant defined based on the van der Waals equation of state. Satisfactory results-often close to the ones from the one-parameter correlation-are obtained for all systems investigated in this work. Compared with literature models that have been applied to the prediction of Henry constants In polymers, this scheme is simpler and applicable to supercritical gas-containing systems.

U2 - 10.1002/pen.10410

DO - 10.1002/pen.10410

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VL - 36

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JO - Polymer Engineering and Science

JF - Polymer Engineering and Science

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