Viscosity and Excess Viscosity for Associated Binary Systems at T= (298.15, 308.15 and 318.15)

Year 2017, Volume: 20 Issue: 4, 183 - 189, 29.11.2017

Rajeev Shukla , Naveen Awathi Vikas Gangwar Sandeep Singh Gyan Prakash

https://doi.org/10.5541/eoguijt.295838

Abstract

Viscosities
and excess viscosities for three binary systems (2-propanol + benzyl alcohol,
2-propanol + 2-phenylethanol, and benzyl alcohol + 2-phenylethanol) were computed
at T= (298.15, 308.15, and 318.15) K over the concentration range 0.05-0.95 at
atmospheric pressure and compared with the experimental work of Ching-Ta et al.  
Different theoretical models assuming association and non-association of
the components of the mixtures, were used to predict the behavior of the
studied liquids, which would typically show strong interactions. The properties
were fitted to the Redlich-Kister polynomial equation to estimate the binary
coefficients and standard errors. The excess viscosities were used to study the
nature and extent of the molecular interactions in the binary mixtures.
McAllister multi body interaction model was used to correlate the properties of
the binary liquid mixtures. Testing of the models for the different systems
showed that, compared with the non-association model theoretical results, the
association model theoretical results were more consistent with the
experimental results. 

Keywords

Viscosity, Excess viscosity, Binary systems, Molecular interaction

References

• [23] R. K. Shukla, N. Awasthi, A. Kumar, A. Shukla, V. K. Pandey, Prediction of associational behaviour of binary liquid mixtures from viscosity data, J. Molliq. Liq., 158, 131-138, 2011