Vapor-liquid equilibrium in polymer-solvent systems with a cubic equation of state

Louli, V; Tassios, D

dc.contributor.author	Louli, V	en
dc.contributor.author	Tassios, D	en
dc.date.accessioned	2014-03-01T01:15:57Z
dc.date.available	2014-03-01T01:15:57Z
dc.date.issued	2000	en
dc.identifier.issn	0378-3812	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13850
dc.subject	cubic equation of state	en
dc.subject	mixing rule	en
dc.subject	vapor-liquid equilibrium	en
dc.subject	polymer solutions	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	DER-WAALS-EQUATION	en
dc.subject.other	PHASE-EQUILIBRIA	en
dc.subject.other	MIXING RULE	en
dc.subject.other	PREDICTION	en
dc.subject.other	MIXTURES	en
dc.subject.other	MODELS	en
dc.subject.other	FLUIDS	en
dc.title	Vapor-liquid equilibrium in polymer-solvent systems with a cubic equation of state	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0378-3812(99)00339-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0378-3812(99)00339-8	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	A cubic equation of state (EoS), the Peng-Robinson (PR) one, is extended to polymers by using a single set of energy (a) and co-volume (b) parameters per polymer fitted to experimental volume data. Excellent results for the volumetric behavior of the polymer up to 2000 bar pressure are obtained. The EoS is applied to the correlation of low pressure vapor-liquid equilibrium (VLE) data for a variety of polymer solutions by employing only one interaction parameter in three mixing rules: the van der Waals one fluid (vdW1f) - using the Berthelot combining rule (B) for a(ij), and the arithmetic mean (AM) and Lorentz (L) ones for b(ij) - the Zhong and Masuoka (ZM); and the modified Huron-Vidal 1st order (MHV1), by coupling the cubic EoS with the Flory-Huggins (FH) model. Best results are obtained with the ZM mixing rule and the same holds for the extrapolation with respect to temperature and polymer molecular weight (MW). Low errors in correlation and extrapolation are also obtained with the other mixing rules, but phase split is observed in certain cases. The performance of other methods for polymer parameters evaluation is also examined. (C) 2000 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	FLUID PHASE EQUILIBRIA	en
dc.identifier.doi	10.1016/S0378-3812(99)00339-8	en
dc.identifier.isi	ISI:000086179000003	en
dc.identifier.volume	168	en
dc.identifier.issue	2	en
dc.identifier.spage	165	en
dc.identifier.epage	182	en