P‐V‐T properties of alternating poly(ethylene‐propylene) liquids

S. ‐j Chen, Yee Chiew, J. A. Gardecki, S. Nilsen, M. Radosz

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The pressure‐volume‐temperature (P‐V‐T) properties of monodisperse alternating poly(ethylene‐propylene) (hydrogenated polyisoprene) melts of varying molecular weights are measured at 0.1 MPa < P < 200.1 MPa, and 290 K < T < 510 K in a dilatometer‐type apparatus. The Flory‐Orwoll‐Vrij (FOV), Modified Cell Model (MCM), Sanchez‐Lacombe (SL), and the Statistical Associating Fluid Theory (SAFT) equations of state are found to correlate the experimental data with excellent accuracy, except either at low pressures and high temperatures, or at high pressures and low temperatures. On average, MCM and SAFT fit the data slightly better than FOV and SL. The equation‐of‐state parameters are found to be independent of molecular weight, especially for SAFT, as required by the theory. © 1994 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)1791-1798
Number of pages8
JournalJournal of Polymer Science Part B: Polymer Physics
Issue number10
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Materials Chemistry
  • Polymers and Plastics
  • Physical and Theoretical Chemistry


  • Flory‐Orwoll‐Vrij (FOV)
  • Modified Cell Model (MCM)
  • Sanchez‐Lacombe (SL)
  • Statistical Associating Fluid Theory (SAFT)
  • alternating poly(ethylene‐propylene) (hydrogenated polyisoprene) melts
  • density
  • equations of state
  • pressure–volume–temperature (P‐V‐T) properties
  • specific volume

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