APPLICATION OF THE VAN-DER-WAALS-EQUATION OF STATE TO POLYMERS .1. CORRELATION

KONTOGEORGIS, GM; HARISMIADIS, VI; FREDENSLUND, A; TASSIOS, DP

dc.contributor.author	KONTOGEORGIS, GM	en
dc.contributor.author	HARISMIADIS, VI	en
dc.contributor.author	FREDENSLUND, A	en
dc.contributor.author	TASSIOS, DP	en
dc.date.accessioned	2014-03-01T01:42:44Z
dc.date.available	2014-03-01T01:42:44Z
dc.date.issued	1994	en
dc.identifier.issn	0378-3812	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23927
dc.subject	THEORY	en
dc.subject	APPLICATION	en
dc.subject	EQUATION OF STATE	en
dc.subject	CUBIC	en
dc.subject	ACTIVITY COEFFICIENT	en
dc.subject	VAPOR-LIQUID EQUILIBRIA	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	VAPOR-LIQUID-EQUILIBRIA	en
dc.subject.other	2ND VIRIAL-COEFFICIENTS	en
dc.subject.other	SOLVENT ACTIVITIES	en
dc.subject.other	PHASE-EQUILIBRIA	en
dc.subject.other	MOLTEN POLYMERS	en
dc.subject.other	CUBIC EQUATION	en
dc.subject.other	PREDICTION	en
dc.subject.other	SOLUBILITIES	en
dc.subject.other	MIXTURES	en
dc.subject.other	DENSITIES	en
dc.title	APPLICATION OF THE VAN-DER-WAALS-EQUATION OF STATE TO POLYMERS .1. CORRELATION	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	A reliable methodology for evaluating the energy and co-volume parameters of cubic equations of state for polymers is proposed. Only two low-pressure volumetric data points are used. The procedure is applied to the van der Waals equation of state and bubble-point pressure calculations are performed for a number of polymer solutions. The usual combining and mixing rules are used. It is shown that the van der Waals equation can correlate the equilibrium pressures of polymer solutions using one binary interaction parameter. The accuracy of the correlation is very good; it is comparable to or better than that achieved using the Flory-Huggins model. It is also shown that the necessary binary interaction parameters for the van der Waals equation of state can be estimated using a simple scheme based on the Berthelot combining rule. It is, thus, demonstrated that the van der Waals equation of state can be a simple and successful tool for the description of the vapor-liquid equilibria in polymer solutions.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	FLUID PHASE EQUILIBRIA	en
dc.identifier.isi	ISI:A1994NP76100005	en
dc.identifier.volume	96	en
dc.identifier.spage	65	en
dc.identifier.epage	92	en