Viscosity of liquid systems involving hydrogenated and fluorinated substances: Liquid mixtures of (hexane+perfluorohexane)

Pedro Morgado, Jana Black, J. Ben Lewis, Christopher R. Iacovella, Clare McCabe, Luís F. G. Martins, Eduardo J. M. Filipe*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The viscosity of (hexane. +. perfluorohexane) mixtures has been measured at 298. K, 303. K and 308. K, over the whole composition range. The results show large negative deviations from the arithmetic mean of the viscosities of the pure components, reaching -17% at x(perfluorohexane). =0.7. To obtain molecular level insight into the behaviour of the system, all-atom molecular dynamics simulations have been performed and used to calculate the viscosities, radial distribution functions, and rotational relaxation times of the studied (hexane. +. perfluorohexane) mixtures. This is the first effort to assess the effect of mixing hydrogenated and fluorinated molecules in the viscosity.

Original languageEnglish
Pages (from-to)161-165
Number of pages5
JournalFluid Phase Equilibria
Volume358
DOIs
Publication statusPublished - 25 Nov 2013

Keywords

  • Alkanes
  • Mixtures
  • Molecular dynamics
  • Perfluoroalkanes
  • Viscosity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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