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Measurements of the density and viscosity of binary mixtures of (hyper-branched polymer,B-H2004 + 1-butanol,or 1-hexanol,or 1-octanol,or methyl tert-butyl ether)
Authors:Urszula Domańska  Zuzanna ?o?ek-Tryznowska
Institution:1. Physical Chemistry Division, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
Abstract:Density and viscosity were determined for binary mixtures of {hyper-branched polymer, Boltorn H2004 (B-H2004) + 1-alcohol (1-butanol, 1-hexanol, and 1-octanol)} at T = (298.15, 308.15, 318.15, 328.15, and 338.15) K and of {B-H2004 + methyl tert-butyl ether (MTBE)} at T = (298.15, 308.15, and 318.15) K and ambient pressure. The temperature dependence of density and viscosity is described by linear regression and by the Vogel–Fucher–Tammann equation, respectively. Excess volumes for the system {B-H2004 + MTBE} are presented as a function of mass fraction. Viscosity deviations were calculated and correlated by the Redlich–Kister polynomial expansions using also the mass fractions. The polynomial correlations describe the variation of viscosity with composition. A qualitative discussion on these quantities in terms of molecular interactions is reported.
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