Excess molar volumes and viscosities of binary mixtures of diethylene glycol dibutyl ether with chloroalkanes at 298.15K

Abstract

<span style="font-size:16.0pt;mso-bidi-font-size:12.0pt" lang="EN-IN">Excess molar volumcs <i>(V</i>_{<span style="mso-bidi-font-style:italic">m</span>}<i>^E) </i>and dynamic viscosities (η) for mixtures of diethylene glycol dibutyl ether + dichloromethane, + trichloromethane, and + tetrachloromethane have been deterrmined as a function of composition at 298.15 K and atmospheric pressure. The excess molar volumes <i>V</i>_{<span style="mso-bidi-font-style:italic">m</span>}<i>^E </i>are all negative over the whole composition range. The viscosity data have been correlated by the methods of Kendall and Monroe, Grunberg and Nissan, Tamura and Kurata, Hind. Katti and Chaudhary, and of McAllister. The deviations in viscosities (∆1nη) and excess energies of activation <span style="mso-bidi-font-style: italic">(∆<i style="mso-bidi-font-style:normal">G</i><span style="mso-bidi-font-style:italic">*<i>^E</i>)<i> </i>for viscous now have been calculated from the experimental results. These results have been discussed in terms of dipole- dipole interaction between diethylene glycol dibutyl either and chloroalkanes and magnitudes of interactions decreasing with the dipole character of the molecule. A short comparative study with results for mixtures with polyethers or alkoxyethanols and chlo<span style="font-size:16.0pt;mso-bidi-font-size:12.0pt;mso-fareast-font-family: HiddenHorzOCR" lang="EN-IN">roalkanes <span style="font-size:16.0pt; mso-bidi-font-size:12.0pt" lang="EN-IN">is also presented.

</span></span></span></span></span>