Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/20341
Title: Excess molar volumes and viscosities of binary liquid mixtures of n-alkoxyethanol + 1-propanol systems at 298.15, 308.15 and 318.15 K
Authors: Pal, Amalendu
Kumar, Anil
Issue Date: Apr-2004
Publisher: NISCAIR-CSIR, India
IPC Code: Int.C1.7 G01N
Abstract: Excess molar volumes and viscosities for binary liquid mixtures of n-alkoxyethanols + 1-propanol have been measured as a function of composition at 308.15 and 318.15 K and atmospheric pressure over the full range of composition. Excess molar volume and viscosity at 298.15 K for the mixtures, 1-propanol + diethylene glycol monobutyl ether (2-(2- butoxyethoxy) ethanol), C4H9(OC2H4)2OH and viscosity at 298.15 K for the mixtures, 1-propanol + diethylene glycol monoelhyl ether (2-(2-ethoxyethoxy) ethanol), C2H5(OC2H4)2OH have also been measured over the whole composition range. From these results deviation in viscosity, Δη, from a mole fraction average have been calculated at various temperatures. The excess volumes and viscosity deviations have been correlated using the Redlich-Kister polynomial equation by the method of least-squares for the estimation the adjustable parameters and the standard errors. McAllister's three body and four body interaction models are used to correlate the kinematic viscosities. Furthermore, Activation enthalpies, ΔH* and entropies, ΔS* of viscous flow have been evaluated and their variation with concentration discussed.
Page(s): 722-729
URI: http://hdl.handle.net/123456789/20341
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.43A(04) [April 2004]

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