Studies on fluid structure and molecular interactions of amines

Abstract

Fluid structure in amines could be readily studied by dielectric measurements by virtue of the influence of local order and the overall dipole moment. The short range interact ion between permanent dipoles could be described by the Kirkwood-Frohlich correlation factor. In dilute solutions or amines with inert solvents, the interact ion between the solute species among themselves may be given by a modified form of the correlation factor (<i>g</i>') by taking the solute-solvent and solvent-solvent interaction. Dielectric constant of the binary mixtures of monoethanolamine and diethanolamine in 1,4 dioxan and triethylenetetramine and cyclohexylamine in benzene were measured at 298, 308 and 318 K. The values of Kirkwood-Frohlich correlation factor (<i>g</i>') were determined at the temperatures mentioned above. The results are interpreted in the light of the theory. The presence of α and β multimers in the above systems was identified.