Miscibility of Polymer Blends with Engineering Models

Harismiadis, VI; Van Bergen, ARD; Saraiva, A; Kontogeorgis, GM; Fredenslund, A; Tassios, DP

dc.contributor.author	Harismiadis, VI	en
dc.contributor.author	Van Bergen, ARD	en
dc.contributor.author	Saraiva, A	en
dc.contributor.author	Kontogeorgis, GM	en
dc.contributor.author	Fredenslund, A	en
dc.contributor.author	Tassios, DP	en
dc.date.accessioned	2014-03-01T01:12:05Z
dc.date.available	2014-03-01T01:12:05Z
dc.date.issued	1996	en
dc.identifier.issn	0001-1541	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11943
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0030294751&partnerID=40&md5=47cc40ad53dc81167b306c20109709f4	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Composition effects	en
dc.subject.other	Entropy	en
dc.subject.other	Equations of state of liquids	en
dc.subject.other	Mathematical models	en
dc.subject.other	Phase equilibria	en
dc.subject.other	Phase interfaces	en
dc.subject.other	Solubility	en
dc.subject.other	Van der Waals forces	en
dc.subject.other	Composition independent binary interaction parameter	en
dc.subject.other	Group contribution models	en
dc.subject.other	Polymer blends	en
dc.subject.other	miscibility	en
dc.subject.other	phase equilibrium model	en
dc.subject.other	polymers	en
dc.title	Miscibility of Polymer Blends with Engineering Models	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The miscibility behavior of polymer blends that do not exhibit strong specific interactions is examined. Phase equilibrium calculations are presented with the van der Waals equation of state and three group-contribution models (UNIFAC, Entropic-FV, and GC-Flory). Performance of these models is also compared. The van der Waals equation of state was recently shown to accurately correlate and predict vapor-liquid and liquid-liquid equilibria for binary polymer/solvent solutions. In this work, it is demonstrated that it correlates the upper critical solution behavior of polymer blends with excellent accuracy using the usual mixing and combining rules and a single temperature- and composition-independent binary interaction parameter. This interaction parameter can be predicted via a generalized expression that uses only the pure component equation-of-state parameters. Using this generalized expression, the upper critical solution temperature can be predicted with an average error of less than 45 degrees C. The van der Waals equation of state can correlate the lower critical solution behavior of polymer blends, using an interaction parameter that is a linear function of temperature. The UNIFAC and Entropic-FV models, in general, are able to predict qualitatively the phase behavior of polymer blends, but quantitative predictions of the critical solution temperatures es are not achieved The GC-Flory equation of state fails to predict the upper critical solution behavior in polymer blends.	en
heal.publisher	AMER INST CHEMICAL ENGINEERS	en
heal.journalName	AIChE Journal	en
dc.identifier.isi	ISI:A1996VR59500016	en
dc.identifier.volume	42	en
dc.identifier.issue	11	en
dc.identifier.spage	3170	en
dc.identifier.epage	3180	en