Phase behaviour of the ternary mixture system of poly(L-lactic acid), dichloromethane and carbon dioxide

被引：10

作者：

Gwon, Jungmin ^{[1
,2
]}

Cho, Dong Woo ^{[1
,2
]}

Kim, Soo Hyeon ^{[3
]}

Shin, Hun Yong ^{[4
]}

Kim, Hwayong ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Brain Korea Program Chem Engn 21, Sch Chem & Biol Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Inst Chem Proc, Seoul 151744, South Korea

[3] Korea Inst Sci & Technol, Seoul 136791, South Korea

[4] Seoul Natl Univ Sci & Technol, Dept Chem & Biol Engn, Seoul 139743, South Korea

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2012年 / 55卷

基金：

新加坡国家研究基金会;

关键词：

Supercritical carbon dioxide; Poly(L-lactic acid); Polymer-solvent-gas ternary systems; The hybrid equation of state for CO2-polymer system; Biodegradable polymer; EQUATION-OF-STATE;

D O I：

10.1016/j.jct.2012.06.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this study, the high pressure phase behaviour of poly(L-lactic acid) (M = 312,000), dichloromethane and carbon dioxide ternary mixtures was studied using a variable volume view cell at temperatures ranging from 313.15 K to 363.15 K and pressures of up to 30.0 MPa as functions of temperature and the CO2/dichloromethane mass ratio at poly(L-lactic acid) weight fractions of 1.0%, 2.5% and 3.0%. The experimental results were correlated with the hybrid equation of state for the CO2-polymer system using the van der Waals one-fluid mixing rule with three adjustable binary interaction parameters. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：37 / 41

页数：5

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