(Liquid + liquid) equilibria of binary systems containing hyperbranched polymer Boltorn® H2004 – Experimental study and modelling in terms of lattice-cluster theory

Urszula Domańska-Żelazna , Kamil Paduszyński , Zuzanna Żołek-Tryznowska


(Liquid + liquid) phase equilibria (LLE) of binary mixtures containing hyperbranched polymer Boltorn® H2004 and n-alkanes (n-hexane, n-heptane, n-octane, and n-decane) were studied over the temperature range from about (260 up to 360) K. The polymer is partially miscible with n-alkanes and the solubility decreases with an increase of the chain length of the solvent. Corresponding LLE phase diagrams including spinodal and binodal (liquid + liquid) coexistence curves were calculated in terms of the statistical mechanics – based on the lattice-cluster theory, based only on the upper critical solution temperature, and the polymer chain architecture. The results show semi-qualitative agreement of predicted and experimental equilibrium compositions and temperatures. Boltorn® H2004 reveals complete miscibility in the liquid phase with alcohols (C1–C8), aromatic hydrocarbons (benzene, toluene, and thiophene), and ethers (methyl tetra-butyl ether, ethyl tetra-butyl ether, and tetrahydrofurane).
Author Urszula Domańska-Żelazna ZChF
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
, Kamil Paduszyński ZChF
Kamil Paduszyński,,
- Department Of Physical Chemistry
, Zuzanna Żołek-Tryznowska IMP
Zuzanna Żołek-Tryznowska,,
- The Institute of Mechanics and Printing
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2011
Keywords in EnglishHyperbranched polymers, Lattice-cluster theory, (Liquid + liquid) phase equilibrium, NRTL correlation
URL http://www.sciencedirect.com/science/article/pii/S0021961410002570
Languageen angielski
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Score (nominal)35
Publication indicators WoS Impact Factor: 2011 = 2.422 (2) - 2011=2.173 (5)
Citation count*4 (2015-07-21)
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