Vapor-liquid equilibrium ratios for hexane at infinite dilution in ethylene+impact polypropylene copolymer and propylene+impact polypropylene copolymer

Yoshiyuki Sato, Akio Tsuboi, Atsushi Sorakubo, Shigeki Takishima, Hirokatsu Masuoka, Takeshi Ishikawa

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Vapor-liquid equilibrium ratios (Kw1 values) for hexane at infinite dilution in propylene+impact polypropylene copolymer (ICP-PP) and ethylene+ICP-PP systems were measured at temperatures 323.2, 343.2 and 363.2 K and pressures up to 2.4 MPa using a chromatographic technique. The solubilities of propylene in polypropylene and those of propylene, ethylene, and hexane in ICP-PP were measured. The PVT properties of the polypropylene and ICP-PP were also studied. These data were used to determine the pure component and binary interaction parameters for the Sanchez-Lacombe equation of state (S-L EOS). The Kw1 values were predicted by using the S-L EOS with binary parameters evaluated by correlation of phase-equilibrium data of binary systems. Good agreement between the experimental and calculated Kw1 values was obtained by optimizing the equation parameters.

Original languageEnglish
Pages (from-to)49-67
Number of pages19
JournalFluid Phase Equilibria
Volume170
Issue number1
DOIs
Publication statusPublished - 2000 Apr 3

Keywords

  • Data
  • PVT
  • Polymer
  • Solubility
  • Vapor-liquid equilibrium ratio

ASJC Scopus subject areas

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

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