Original scientific paper
https://doi.org/10.15255/CABEQ.2015.2183
Vapour–Liquid Equilibria in the Polystyrene + Toluene System at Higher Concentrations of Solvent
J. Pavlíček
; Institute of Chemical Process Fundamentals, The Czech Academy of Sciences, Prague, Czech Republic, Rozvojová 135, 165 02 Praha 6, Czech Republic
G. Bogdanić
; Institute of Chemical Process Fundamentals, The Czech Academy of Sciences, Prague, Czech Republic, Rozvojová 135, 165 02 Praha 6, Czech Republic
I. Wichterle
orcid.org/0000-0002-1501-0522
; Institute of Chemical Process Fundamentals, The Czech Academy of Sciences, Prague, Czech Republic, Rozvojová 135, 165 02 Praha 6, Czech Republic
Abstract
Vapour–liquid equilibria (VLE) were determined in the polystyrene + toluene system under isothermal conditions at 363.15, 373.15, and 383.15 K using an improved all-glass microebulliometer with circulation of the liquid phase for the dynamic measurement of total pressure over liquid mixtures. The experimental data were correlated using the UNIQUAC-free volume model and the applicability of three known predictive models was tested. It was found that prediction of VLE using the GC-Flory equation of state, the UNIFAC-vdw-FV and the Entropic-FV model are of the same quality.
Keywords
vapour–liquid equilibrium; polymer–solvent system; ebulliometer; experimental data; correlation
Hrčak ID:
137548
URI
Publication date:
6.4.2015.
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