Vapor-liquid and liquid-liquid equilibria in the water + poly(propylene glycol) system (CROSBI ID 295044)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Pavlíček, Jan ; Rotrekl, Jan ; Bogdanić, Grozdana ; Wichterle, Ivan ; Izák, Pavel
engleski
Vapor-liquid and liquid-liquid equilibria in the water + poly(propylene glycol) system
The aim of this study was to investigate phase equilibria in a water + poly(propylene glycol) [Mn = 425 g mol-1] system. Vapor-liquid equilibria (VLE) were determined ebulliometrically in the completely miscible region with higher water concentrations at isotherms 323.15, 333.15, 343.15, and 353.15 K. These data were correlated with the UNIQUAC free-volume (FV) model to be consistent with our previous studies. Liquid-liquid equilibrium (LLE) was determined using the cloud-point method at 320–350 K, and lower critical solution temperature was found at 320.2 K. LLE was correlated with the entropic FVUNIQUAC segmental interaction model developed earlier, which is suited for correlation and calculation of LLE of polymer solutions. We estimated new binary segmental interaction parameters for interactions between propylene glycol and water segments.
Vapor–liquid equilibrium ; Liquid–liquid equilibrium ; Polymer–solvent system ; Correlation
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
337
2021.
116336
6
objavljeno
0167-7322
1873-3166
10.1016/j.molliq.2021.116336