Equilibrium Data of the Biphasic System Poly(ethylene oxide) 4000 + Copper Sulfate + Water at (5, 10, 35, and 45) °C

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• 作者：Rosana Moura de Oliveira ; Jane Sé ; lia dos Reis Coimbra ; Kelly Roberta Francisco ; Luis Antonio Minim ; Luis Henrique Mendes da Silva ; Edwin Elard Garcia Rojas
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2008
• 出版时间：July 2008
• 年：2008
• 卷：53
• 期：7
• 页码：1571 - 1573
• 全文大小：75K
• 年卷期：v.53,no.7(July 2008)
• ISSN：1520-5134

文摘

Phase equilibrium data of an aqueous two-phase system composed of poly(ethylene oxide) 4000 + copper sulfate + water were determined at four temperatures, (5, 10, 35, and 45) °C. The phase separation was entropically driven as can be seen by the small influence of temperature on the phase diagram. However, the rise in temperature increased both the tie line length and the slope of the tie line.