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Isothermal vapor–liquid equilibria in diluted polystyrene + butanone-2 system

This paper is another one in the series of continuing research of vapour–liquid equilibria (VLE) measurements in polymer + solvent systems. VLE were determined in the polystyrene + 2-butanone system under isothermal conditions at 333.15, 343.15, and 353.15 K in order to complete the previous studies on the polystyrene + toluene [1] and poly(methyl methacrylate) + 2-butanone [2] systems including earlier investigations [3, 4]. Measurements were carried out with use of an all-glass microebulliometer with circulation of the liquid phase for the dynamic measurement of total pressure over liquid solutions. The experimental data were correlated using the UNIQUAC-FV model and the applicability of 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. References: 1. J. Pavlíček, G. Bogdanić, I. Wichterle, Chem. Biochem. Eng. Q., 29 (1) 45-48 (2015). 2. J. Pavlíček, G. Bogdanić, I. Wichterle, Chem. Biochem. Eng. Q., 28 (4) 447-450 (2014). 3. G. Bogdanić, I. Wichterle, J. Chem. Eng. Data 56(4), 1080-1083 (2011). 4. J. Pavlíček, G. Bogdanić, I. Wichterle, Fluid Phase Equilib. 358, 301-303 (2013).

experimental data; polymer–solvent system; vapour–liquid equilibrium

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