Abstract
Viscosities of several mono-, di-, and trialkylamines have been measured in the temperature range 298 to 333 K. It is observed that viscosities are highly dependent on shape, size, and association through H-bond or through dipole. Following the transition state theory, energy, Gibbs free energy, and entropy of activation of viscous flow have been calculated. The values of expansion energy for these liquids have also been calculated using free volume theory, and subsequently amines have been classified as volume-restrained or energy-restrained liquids. The group contribution method of Van Velzen, Cardozo, and Langenkamp for estimating viscosity has been examined with the present and literature data, and the new group contribution increments ΔN i and ΔB i for amines have been evaluated.
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Oswal, S.L., Sindhe, R.G., Patel, A.T. et al. Study of viscosity of mono-, di-, and trialkylamines. Int J Thermophys 13, 617–628 (1992). https://doi.org/10.1007/BF00501944
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DOI: https://doi.org/10.1007/BF00501944