Isopiestic determination of the water activities of poly(ethylene glycol) plus salt plus water systems at 25 degrees C

被引：54

作者：

Lin, DQ ^{[1
]}

Zhu, ZQ ^{[1
]}

Mei, LH ^{[1
]}

Yang, LR ^{[1
]}

机构：

[1] ZHEJIANG UNIV,DEPT CHEM ENGN,HANGZHOU 310027,PEOPLES R CHINA

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1996年 / 41卷 / 05期

关键词：

D O I：

10.1021/je960065a

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Water activities of poly(ethylene glycol) (PEG) + salt + H2O systems have been measured using an improved isopiestic method at 25 degrees C. The salts used were MgSO4, (NH4)(2)SO4, KH2PO4, and K2HPO4. The water activities were correlated successfully with an empirical equation.

引用

页码：1040 / 1042

页数：3

共 10 条

[1]

Albertsson P.A., 1986, PARTITION CELL PARTI

[2] Thermodynamic model of liquid-solid equilibria for natural fats and oils [J].

Won, K.W. .

Fluid Phase Equilibria, 1993, 82 (pt 1) :261-273

[3] VAPOR LIQUID EQUILIBRIUM IN AQUEOUS-SOLUTIONS OF VARIOUS GLYCOLS AND POLY(ETHYLENE GLYCOLS) .3. POLY(ETHYLENE GLYCOLS) [J].

HERSKOWITZ, M ;

GOTTLIEB, M .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1985, 30 (02) :233-234

[4] An improved isopiestic method for measurement of water activities in aqueous polymer and salt solutions [J].

Lin, DQ ;

Mei, LH ;

Zhu, ZQ ;

Han, ZX .

FLUID PHASE EQUILIBRIA, 1996, 118 (02) :241-248

[5] AN IMPROVED ISOPIESTIC METHOD TO DETERMINE ACTIVITIES IN MULTICOMPONENT MIXTURES [J].

OCHS, LR ;

KABIRIBADR, M ;

CABEZAS, H .

AICHE JOURNAL, 1990, 36 (12) :1908-1912

[6]

Robinson R. A., 1965, Electrolyte Solutions, V2nd

[7] Isotonic solutions I The chemical potential of water in aqueous solutions of sodium chloride, potassium chloride, sulfuric acid, sucrose, urea and glycerol at 25(o) [J].

Scatchard, G ;

Hamer, WJ ;

Wood, SE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :3061-3070

[8] PHASE COMPOSITIONS, VISCOSITIES, AND DENSITIES FOR AQUEOUS 2-PHASE SYSTEMS COMPOSED OF POLYETHYLENE-GLYCOL AND VARIOUS SALTS AT 25-DEGREES-C [J].

SNYDER, SM ;

COLE, KD ;

SZLAG, DC .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1992, 37 (02) :268-274

[9]

Walter H., 1985, PARTITIONING AQUEOUS

[10]

WU YT, IN PRESS FLUID PHASE

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