Sl. Oswal et Hs. Desai, Studies of viscosity and excess molar volume of binary mixtures - 2. Butylamine+1-alkanol mixtures at 303.15 and 313.15 K, FLU PH EQUI, 161(1), 1999, pp. 191-204
The excess molar volume V-E, viscosity deviation Delta eta excess viscosity
eta(E), and excess Gibbs energy of activation Delta G*(E) of viscous flow
have been investigated from the density rho and viscosity eta measurements
of eight binary mixtures of butylamine with ethanol, propanol, butanol, pen
tanol, hexanol, heptanol, octanol and decanol over the entire range of mole
fractions at 303.15 and 313.15 K. The viscosity data have been correlated
with the equations of Grunberg and Nissan [L. Grunberg, A.H. Nissan, Nature
164 (1949) 799-800], Tamura and Kurata [M. Tamura, M. Kurata, Bull. Chem.
Sec. Jpn. 25 (1952) 32-37], Hind et al. [R.K. Hind, E. McLaughlin, A.R. Ubb
elohde, Trans. Faraday Sec. 56 (1960) 328-334], Katti and Chaudhri [P.K. Ka
tti, M.M. Chaudhri, J. Chem. Eng. Data 9 (1964) 442-443], McAllister [R.A.
McAllister, AIChE J. 6 (1960) 427-431], Heric [E.L. Heric, J. Chem. Eng. Da
ta 11 (1966) 66-68], and of Auslaender [G. Auslaender, Br. Chem. Eng. 10 (1
965) 196]. The systems studied exhibit very strong cross association throug
h strong O-H ... N bonding between -OH and -NH2 groups. As a consequence of
this strong intermolecular association, all eight systems have very large
negative V-E. Except butylamine + ethanol mixture, the magnitude of negativ
e deviations in viscosity increases with chain length of alkanol. (C) 1999
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