Studies of thermophysical properties of binary liquid mixtures of amine and alcohols at various temperatures

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• 作者：Gyan Prakash Dubey ; ^{gyan.dubey@rediffmail.com} ; Krishan Kumar
• 关键词：Density ; Viscosity ; Speed of sound ; Excess parameters ; Ethylenediamine ; Alcohols
• 刊名：Journal of Chemical Thermodynamics
• 出版年：2012
• 期刊代码：123_00219614
• 类别：ch
• 出版时间：July, 2012
• 卷：50
• 期：Complete
• 页码：7-14
• 文件大小：329 K

摘要

The density 蟻 and speed of sound u of the binary mixtures of ethylenediamine (EDA) with alcohols (1-hexanol, 1-octanol, and 1-decanol) were measured at temperatures from (293.15 to 313.15) K and viscosity 畏 at (298.15 to 308.15) K over the entire composition range and at atmospheric pressure. Using the experimental values of density, viscosity and speed of sound, the excess molar volume , viscosity deviation 螖畏, deviation in speed of sound u^D, deviation in isentropic compressibility 螖魏_s were calculated. These results were fitted to the Redlich-Kister type polynomial equation. The variations of these excess parameters with composition were discussed from the viewpoint of intermolecular interactions in these mixtures. The excess properties are found to be either positive or negative depending on the molecular interactions and the nature of liquid mixtures. Further, the viscosity data have been used and analyzed in terms of Heric鈭払rewer and McAllister models.