Resumen
A mathematical model was developed for the representation of experimental viscosities of liquid mixtures comprising a polymer-solvent solution over a wide range of temperature and composition. The resulting viscosity model is based on the Eyring theory and a cubic equation of state CEoS (Soave o Peng-Robinson) coupled with an expression for the excess Gibbs free energy G-ex suitable for polymer-solvent solutions (Flory-Huggins model). The connection between the CEoS and the G-ex model was made possible via the use of mixing rules of the Wong-Sandler type. The results obtained in this work were highly encouraging and satisfactory during the representation of experimental viscosities for two different polymer-solvent mixtures (polyethylenglycol/1,4-dioxane and polyethylenglycol/oxane) within the whole range of compositions and at different temperatures and molecular weights of the polymeric specie.
Idioma original | Inglés |
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Páginas | 809 |
Número de páginas | 1 |
Estado | Publicada - 2005 |
Evento | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, Estados Unidos Duración: 30 oct. 2005 → 4 nov. 2005 |
Conferencia
Conferencia | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase |
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País/Territorio | Estados Unidos |
Ciudad | Cincinnati, OH |
Período | 30/10/05 → 4/11/05 |