Biodegradable Polymer-Phase Behavior: Liquid–Liquid Equilibrium of Ethyl Lactate and Poly(Lactic Acid)
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- 作者：Rui Ferreira ; Nuno Pedrosa ; Isabel M. Marrucho ; Luí ; s Paulo N. Rebelo
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2008
- 出版时间：February 2008
- 年：2008
- 卷：53
- 期：2
- 页码：588 - 590
- 全文大小：61K
- 年卷期：v.53,no.2(February 2008)
- ISSN：1520-5134
文摘
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.