Biodegradable polymer-phase behavior: Liquid-liquid equilibrium of ethyl lactate and poly(lactic acid)

Rui Ferreira, Nuno Pedrosa, Isabel M. Marrucho, Luís Paulo N. Rebelo

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Liquid-liquid equilibrium data of ethyl lactate and poly(lactic acid) binary mixtures were measured at 0.1 MPa nominal pressure in the temperature range from (260 to 265) K. Cloud-point temperatures were measured using a dynamic method with visual detection of phase transitions (naked-eye determination of turbidity). This system exhibits an upper critical solution temperature (UCST) at Tc = 265.1 K and wPLA,c = 0.03776. The experimental data were modeled with the PC-SAFT equation of state, and new parameters for both compounds within the PC-SAFT frame are provided. The model correlates well with the observed experimental data.

Original languageEnglish
Pages (from-to)588-590
Number of pages3
JournalJournal of Chemical and Engineering Data
Volume53
Issue number2
DOIs
Publication statusPublished - 1 Feb 2008

Keywords

  • Tea
  • Flavonoids
  • Green tea

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