Liquid-liquid equilibria of aqueous two-phase systems containing polyethylene glycol and sodium dihydrogen phosphate or disodium hydrogen phosphate - Experiment and correlation

被引：123
作者：
Zafarani-Moattar, MT [1 ]
Sadeghi, R [1 ]
机构：
[1] Univ Tabriz, Dept Chem Phys, Tabriz, Iran
来源：
FLUID PHASE EQUILIBRIA | 2001年 / 181卷 / 1-2期
关键词：
liquid-liquid equilibrium; phase diagram; polyethylene glycol; sodium dihydrogen phosphate; disodium hydrogen phosphate; osmotic virial equation;
D O I：
10.1016/S0378-3812(01)00373-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Phase diagrams and liquid-liquid equilibrium (LLE) data of the aqueous polyethylene glycol (PEG)-sodium dihydrogen phosphate and aqueous PEG-disodium hydrogen phosphate systems have been determined experimentally at 298.15, 308.15 and 318.15 K for two different molecular weights of the polymer (1000 and 6000). Furthermore, the osmotic virial equation was used to correlate the phase behavior of these systems. Good agreement was obtained with the experimental data. Finally, the effect of temperature, the polymer molecular weight and the type of salt on the LLE are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：95 / 112
页数：18
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