High-pressure phase behavior of polycaprolactone, carbon dioxide, and dichloromethane ternary mixture systems

Jung Min Gwon, Hun Yong Shin, Soo Hyun Kim, Hwayong Kim

Research output: Contribution to journalArticle


The high-pressure phase behavior of a polycaprolactone (Mw=56,145 g/mol, polydispersity 1.2), dichloromethane, and carbon dioxide ternary system was measured using a variable-volume view cell. The experimental temperatures and pressures ranged from 313.15 K to 353.15 K and up to 300 bar as functions of the CO2/dichloromethane mass ratio and temperature, at poly(D-lactic acid) weight fractions of 1.0, 2.0, and 3.0%. The correlation results were obtained from the hybrid equation of state (Peng-Robinson equation of state + SAFT equation of state) for the CO2-polymer system using the van der Waals one-fluid mixing rule. The three binary interaction parameters were optimized by the simplex method algorithm.

Original languageEnglish
Pages (from-to)193-198
Number of pages6
JournalKorean Chemical Engineering Research
Issue number2
Publication statusPublished - 2015 Apr 1
Externally publishedYes



  • Biodegradable polymer
  • Poly(D-lactic acid)
  • Polymer-solvent-gas ternary systems
  • Supercritical carbon dioxide
  • The hybrid equation of state for CO-polymer system

ASJC Scopus subject areas

  • Chemical Engineering(all)

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