کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
217246 | 1426325 | 2007 | 9 صفحه PDF | دانلود رایگان |
Densities and viscosities for dimethylsulfoxide (DMSO) with methanol, ethanol, 1-propanol, and 2-propanol have been measured as a function of mole fraction at T = (303.15, 308.15, 313.15, 318.15, and 323.15) K and atmospheric pressure. From the measurements, excess molar volumes (VmE), excess viscosities (ηE), and Grunberg and Nissan interaction parameters (ε ) have been calculated. The excess parameters are fitted to a Redlich–Kister equation. Excess molar volumes (VmE) are negative for (DMSO + methanol, + ethanol) systems throughout the whole range of composition. The (DMSO + 1-propanol) system shows both positive and negative excess molar volumes and (DMSO + 2-propanol) shows positive excess molar volume, hardly any negative value is observed in alcohol rich-region. The excess viscosities and interaction parameters of all the mixtures are negative except for the (DMSO + methanol) system which is positive.
Journal: The Journal of Chemical Thermodynamics - Volume 39, Issue 5, May 2007, Pages 675–683