Naslov
Vapor-Liquid Equilibrium Calculations for Polymer Solutions
(The UNIQUAC-NRF Segmental Interaction Model for Vapor-Liquid Equilibrium Calculations for Polymer Solutions)

Autori
Radfarnia, Hamid R. ; Bogdanić, Grozdana ; Taghikhnai, Vahid ; Ghotbi, Cyrus

Izvornik
Polimeri : časopis za plastiku i gumu (0351-1871) 26 (2005), 3; 115-120

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Vapor-liquid equilibrium calculation; polymer solutions; segmental interaction UNIQUAC-NRF model

Sažetak
This paper presents a new segment-based thermodynamic model containing the combinatorial and energetic contributions to the excess Gibbs energy for correlating/predicting of the vapor-liquid equilibrium (VLE) of polymer solutions. The model is derived from the UNIQUAC-NRF model, recently proposed by Haghtalab and Asadollahi, following the idea to associate the nonideality of polymer-solvent mixture with polymer segment-solvent interaction parameters. Segment activity coefficients are calculated by means of the UNIQUAC model. At the present state of development, 16 binary segmental interaction parameters have been estimated. The capability of the model is demonstrated with successful representation of VLE correlation/prediction for 40 polymer-solvent systems. The model is capable to correlate/predict the VLE of polymer solutions with satisfactory accuracy and can provide a thermodynamic framework for calculating the VLE of polymer solutions using weakly temperature-dependent UNIQUAC-NRF parameters.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA