Application of the van der Waals equation of state to polymers. I. 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	2014-03-01T01:42:30Z
dc.date.available	2014-03-01T01:42:30Z
dc.date.issued	1994	en
dc.identifier.issn	03783812	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23862
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0028425368&partnerID=40&md5=3a2527ffec309e13677557c399850b9c	en
dc.subject	Activity coefficient	en
dc.subject	Application	en
dc.subject	Cubic	en
dc.subject	Equation of state	en
dc.subject	Polymer solutions	en
dc.subject	Theory	en
dc.subject	Vapor-liquid equilibria	en
dc.subject.other	Correlation methods	en
dc.subject.other	Equations of state	en
dc.subject.other	Mathematical models	en
dc.subject.other	Phase transitions	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Activity coefficient	en
dc.subject.other	Flory-huggins model	en
dc.subject.other	Vapor liquid equilibria	en
dc.subject.other	Polymers	en
dc.title	Application of the van der Waals equation of state to polymers. I. Correlation	en
heal.type	journalArticle	en
heal.publicationDate	1994	en
heal.abstract	Kontogeorgis G.M., Harismiadis V.I., Fredenslund A., and Tassios D.P., 1994. Application of the van der Waals equation of state to polymers. I. Correlation. Fluid Phase Equilibria, 96: 65-92. 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. © 1994.	en
heal.journalName	Fluid Phase Equilibria	en
dc.identifier.volume	96	en
dc.identifier.issue	C	en
dc.identifier.spage	65	en
dc.identifier.epage	92	en