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Study of VLE phase behavior and correlating the thermophysical properties of polymer solutions using a local composition-based model

Pazuki, G. R ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1002/app.29641
  3. Publisher: 2009
  4. Abstract:
  5. In this study, the recently proposed model by Pazuki et al., based on the local composition concept (LCC), has been used in correlating the vapor-liquid phase behavior of polymer solutions. Similar to the LCC models available in the literature, the proposed model has two combinatorial and residual terms to account for both entropic as well as enthalpic effects in solution. The Flory-Huggins model has been considered as the combinatorial part of the proposed model, while the equation proposed by Pazuki et al. was considered as the residual term. The proposed model has been used in correlating the vapor-liquid phase behavior for a large number of polymer-solvent mixtures at different conditions. The results obtained from the proposed model have been compared with those obtained from the UNIQUAC-FV model. The results showed that the proposed model can accurately correlate the VLE data for polymer solutions studied in this work. Also, the proposed model has been used to obtain the thermophysical properties such as density, viscosity, and excess enthalpy for these polymer solutions. The results in connection with the thermophysical properties obtained from the proposed model have been compared with those obtained from the Poly-NRTL and the Poly-Wilson models. The results showed that the proposed model can accurately correlate the properties of polymer solutions at various conditions. © 2009 Wiley Periodicals, Inc
  6. Keywords:
  7. Area surface fraction ; Enthalpic effects ; Excess enthalpies ; Flory-huggins models ; Local composition model ; Local composition models ; Local compositions ; Polymer-solvent mixtures ; Uniquac ; Vapor liquids ; Vle datum ; Wilson models ; E-learning ; Liquids ; Phase behavior ; Phase equilibria ; Polymer solutions ; Polymers ; Vapors ; Thermodynamic properties ; Physical property ; Polymer ; Polymer solution ; Solvent ; Thermal property ; Viscosity
  8. Source: Journal of Applied Polymer Science ; Volume 112, Issue 3 , 2009 , Pages 1356-1364 ; 00218995 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/app.29641