Liquid-Liquid Equilibria of Aqueous Two-Phase Systems Containing Sodium Hydroxide plus Poly(ethylene glycol) of (1450, 4000, or 10 000) g.mol-1 at (288.2, 298.2, and 308.2) K

被引：22

作者：

Diniz, Renata S. ^{[1
]}

Souza, Evaldo C., Jr. ^{[2
]}

Coimbra, Jane S. R. ^{[1
,2
]}

de Oliveira, Eduardo B. ^{[1
]}

da Costa, Angelica Ribeiro ^{[1
]}

机构：

[1] Univ Fed Vicosa, Dept Tecnol Alimentos, BR-36570000 Vicosa, MG, Brazil

[2] UESB, DTRA, BR-45700000 Itapetinga, BA, Brazil

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2012年 / 57卷 / 02期

关键词：

POTASSIUM PHOSPHATE; POLYETHYLENE-GLYCOL; PHASE-EQUILIBRIUM; WATER; SALT; BEHAVIOR;

D O I：

10.1021/je2007617

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Liquid-liquid equilibrium data and phase diagrams of new aqueous two-phase systems (ATPS's), composed of water + sodium hydroxide + poly(ethylene glycol) (PEG) of molar masses (1450, 4000, or 10 000) g.mol(-1), were determined at (288.2, 298.2, and 308.2) K. The effects of temperature and PEG molar mass on the equilibrium data were studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. It was also observed that binodal curves shifted toward the origin with the increase in PEG molar mass.

引用

页码：280 / 283

页数：4

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