乙二醇
聚乙二醇
锌
水溶液
PEG比率
相(物质)
硫酸盐
联络线
液态液体
材料科学
化学
色谱法
热力学
有机化学
功率(物理)
经济
物理
电力系统
财务
作者
Rosana Moura de Oliveira,Jane Sélia dos Reis Coimbra,Kelly R. Francisco,Luís Antônio Minim,Luís Henrique Mendes da Silva,José Antônio Marques Pereira
摘要
Liquid–liquid equilibrium data of aqueous two-phase systems composed of polyethylene(glycol) (PEG) 4000 + zinc sulfate at (5, 10, 35, and 45) °C were measured. The effect of temperature in the systems was studied. The expansion of the two-phase area with the increase in temperature from (5 to 35) °C and also a small reduction of the biphasic region from (35 to 45) °C were observed. The slope of all tie lines increased with the temperature increase. The tie line length increased in the ranges of (5 to 25) °C and (35 to 45) °C and decreased from (25 to 35) °C.
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