High-Pressure Phase Behavior of Poly(l -lactic acid), Trichloromethane, and Carbon Dioxide Ternary Mixture Systems

Taehyun Im, Jungmin Gwon, Soo Hyun Kim, Hun Yong Shin, Hwayong Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this study, the phase behavior of a poly(l-lactic acid) (M = 312000, polydispersity 2.189)-trichloromethane-carbon dioxide ternary system was measured using a variable volume view cell at pressures up to 34.0 MPa and temperatures between (313.15 K and 363.15) K at an interval of 10 K. Bubble and cloud point pressures were determined as functions of the trichlomethane-to-carbon dioxide ratio, concentration of poly(l-lactic acid) (1.0, 2.0, and 3.0 wt %), and temperature. The hybrid equation of state for the supercritical CO2-polymer system combined with the van der Waals one-fluid mixing rule was used for correlation of the experimental results. The three binary parameters of this system were optimized by the simplex method algorithm.

Original languageEnglish
Pages (from-to)2172-2177
Number of pages6
JournalJournal of Chemical and Engineering Data
Volume60
Issue number7
DOIs
Publication statusPublished - 2015 Jul 9
Externally publishedYes

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Phase behavior
Lactic acid
Chloroform
Carbon Dioxide
Lactic Acid
Carbon dioxide
Polydispersity
Ternary systems
Equations of state
Polymers
Temperature
Fluids

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

High-Pressure Phase Behavior of Poly(l -lactic acid), Trichloromethane, and Carbon Dioxide Ternary Mixture Systems. / Im, Taehyun; Gwon, Jungmin; Kim, Soo Hyun; Shin, Hun Yong; Kim, Hwayong.

In: Journal of Chemical and Engineering Data, Vol. 60, No. 7, 09.07.2015, p. 2172-2177.

Research output: Contribution to journalArticle

Im, Taehyun ; Gwon, Jungmin ; Kim, Soo Hyun ; Shin, Hun Yong ; Kim, Hwayong. / High-Pressure Phase Behavior of Poly(l -lactic acid), Trichloromethane, and Carbon Dioxide Ternary Mixture Systems. In: Journal of Chemical and Engineering Data. 2015 ; Vol. 60, No. 7. pp. 2172-2177.
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