Equilibrium phase behavior of poly(ethylene glycol) plus potassium phosphate plus water two-phase systems at various pH and temperatures

被引：32

作者：

daSilva, LHM ^{[1
]}

Coimbra, JSR ^{[1
]}

Meirelles, AJD ^{[1
]}

机构：

[1] UNICAMP,DEPT ENGN ALIMENTOS,LASEFI,LAB SEPARACOES FIS,BR-13081970 CAMPINAS,SP,BRAZIL

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1997年 / 42卷 / 02期

关键词：

D O I：

10.1021/je9602677

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work presents the effects of changes in temperature (4 degrees C, 25 degrees C, and 40 degrees C), pH (6, 7, and 9), and polymer molecular weight (1000 and 8000) on the equilibrium phase behavior of two-phase PEG + potassium phosphate + water systems. As the temperature and pH were increased, the binodal curve shifted to lower polyethylene and phosphate concentrations, resulting in a higher difference in polymer and salt concentrations between the top and bottom phases. This corresponds to an increase in the region of two-phase coexistence.

引用

页码：398 / 401

页数：4

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