Mathematical modelling of the solubility of supercritical CO2 in poly(L-lactide) and poly(D,L-lactide-co-glycolide)

被引：26
|
作者：
Aionicesei, Elena [1 ]
Skerget, Mojca [1 ]
Knez, Zeljko [1 ]
机构：
[1] Univ Maribor, Fac Chem & Chem Engn, Lab Separat Proc, SI-2000 Maribor, Slovenia
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2009年 / 50卷 / 03期
关键词：
Sanchez-Lacombe equation of state; PC-SAFT; Poly(L-lactide); Poly(D; L-lactide-co-glycolide); Supercritical CO2; Solubility; CARBON-DIOXIDE; PERTURBATION-THEORY; STATE; EQUATION; FLUIDS; DIFFUSIVITY; POLYSTYRENE; COPOLYMER; MOLECULES; BEHAVIOR;
D O I：
10.1016/j.supflu.2009.06.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two mathematical models, Sanchez-Lacombe equation of state and the Perturbed-Chain Statistical Associating Fluid Theory were applied for modelling the phase equilibrium for the poly(L-lactide)-CO2 and poly(D,L-lactide-co-glycolide)-CO2 Systems. Aspen Polymer Plus software was used. The results were compared with previously obtained experimental values for solubility. The solubility of scCO(2) in the two biodegradable polymers was calculated for three different temperatures (308,313 and 323 K) in the pressure range (10-30 MPa). The characteristic parameters for the components and the binary interaction parameters for the models were optimized in order to obtain the best fit between the estimated and the experimental gas solubility data. The results suggest that both SL EOS and PC-SAFT are reliable models in describing the phase equilibrium of the PLLA-CO2 and PLGA-CO2 systems at the proposed working conditions. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：320 / 326
页数：7
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