Vapor-Liquid (VLE) and Liquid-Liquid (LLE) Phase Equilibria Calculations for Polystyrene + Methylcyclohexane and Polystyrene + Cyclohexane Solutions

• Autorzy: Wilczura-Wachnik H. , Jonsdottir S.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the vapor-liquid (VLE) and liquid-liquid (LLE) phase equilibria predictions for polystyrene in two theta solvents: cyclohexane andmethylcyclohexane.VLE calculations were performed with the Elbro free volume method and a modified version of the PC-SAFT method, as well as with three UNIFAC type group contribution models: Entropic Free Volume + UNIFAC VLE 1coeff., Entropic Free Volume + UNIFAC VLE 2coeff., and Oishi-Prausnitz + UNIFAC VLE 2coeff. Solvent activities were calculated for the polystyrene + cyclohexane and polystyrene + methylcyclohexane solutions, and compared with experimental data. LLE predictions were performed with PC-SAFT method and compared with experimental data. The obtained results show that the PC-SAFTmethod gave themost accurate predictions for bothVLE as well as LLE for the systems studied.

Słowa kluczowe

EN

PC-SAFT and Elbro free volume methods; UNIFAC; polystyrene

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2006
• Tom: Vol. 80, nr 1
• Strony: 65--79
• Opis fizyczny: Bibliogr. 35 poz., rys.

Twórcy

autor

Wilczura-Wachnik H.

autor

Jonsdottir S.

• The Faculty of Chemistry, Warsaw University, Pasteura 1 Street, 02-093 Warsaw, Poland

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