Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
202951 | Fluid Phase Equilibria | 2010 | 5 Pages |
Abstract
Experimental results are presented for the liquid–liquid equilibrium of a ternary system (N-vinylpyrrolidone + sodium sulfate + water) and three quaternary systems composed of (N-vinylpyrrolidone + poly(vinylpyrrolidone) + sodium sulfate + water) at 25 °C. The quaternary systems differ in the number averaged molecular mass of the poly(vinylpyrrolidones). That molecular mass was between about 4 000 and 140 000. The experimental results are described with a semi-empirical model (VERS model) for the excess Gibbs energy.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Natalia Fedicheva, Luciana Ninni, Gerd Maurer,