High-pressure phase behaviour of poly(d-lactic acid), trichloromethane, and carbon dioxide ternary mixture systems

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Abstract The high pressure phase behaviour of poly(d-lactic acid) (Mw = 359,000), trichloromethane, and carbon dioxide ternary mixture systems is presented in this study. Cloud and bubble point pressures were measured using a variable volume view cell at temperatures (313.15 to 363.15) K and pressures up to 33.6 MPa. The hybrid equation of state for the polymer-carbon dioxide system was used to correlate the experimental results. The van der Waals one-fluid mixing rule with three adjustable binary interaction parameters was used for all correlations. The binary parameters were optimised using the simplex method algorithm.

Original languageEnglish
Article number4292
Pages (from-to)216-223
Number of pages8
JournalJournal of Chemical Thermodynamics
Volume90
DOIs
Publication statusPublished - 2015 Jul 22
Externally publishedYes

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Keywords

  • (Polymer + solvent + gas) ternary systems
  • Biodegradable polymer
  • Poly(d-lactic acid)
  • Supercritical carbon dioxide
  • The hybrid equation of state for (CO<inf>2</inf> + polymer) system

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Physical and Theoretical Chemistry

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