Resumo

PAEZ, Manuel S; GARCIA, Juan D  e  VERGARA, María K. Viscometric properties of DL-alanine in aqueous solutions of 1-Butyl-3-methyl imidazolium trifluoromethanesulfonic acid at different temperatures. Rev.Colomb.Quim. [online]. 2015, vol.44, n.3, pp.39-48. ISSN 0120-2804.  https://doi.org/10.15446/rev.colomb.quim.v44n3.55608.

Flow times of DL-alanine in aqueous solutions of ionic liquid 1-butyl-3-methyl imidazolium trifluoromethanesulfonate (0.1000-1.0000 mol/Kg) were determined, using a viscometer model Anton Paar® AMVn at 283.15, 288.15, 293.15, 298.15, 303.15, 308.1, 313.15 and 318.15 K and 0.10 MPa. From the data obtained the absolute viscosities, viscosity coefficients B, the slope and the activation parameters of viscous flow at state of infinite dilution were calculated. The values obtained for these parameters were discussed in terms of the interactions present in solution.

Palavras-chave : ionic liquid; viscosity; activation parameters; viscous flow.

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