In:
Zeitschrift für Physikalische Chemie, Walter de Gruyter GmbH, Vol. 217, No. 6 ( 2003-6-1), p. 637-652
Abstract:
Viscosities of LiClO 4 and LiBr have been measured in solvent mixtures of propylene carbonate (PC) with dimethylformamide (DMF), tetrahydrofuran (THF), acetonitrile (AN) and methyl formate (MF) at 298.15K. The dependence of viscosity on the composition of the mixed solvents was fitted with an equation without adjustable parameter. Viscosity B -coefficients for lithium salts and the corresponding activation free energies (Δμ 0,≠ ) for viscous flow have been evaluated. At the same time, viscosity B -coefficients were predicted by the dielectric friction theory. The unsuccessful prediction of the composition dependence of the B -coefficients indicates that improvements will be necessary on the theory with taking account of the short-range interaction and molecular nature of the solvents. Furthermore, solute–solvent interactions in these mixed solvents are discussed in terms of the B -coefficients and activation parameters.
Type of Medium:
Online Resource
ISSN:
2196-7156
,
0942-9352
DOI:
10.1524/zpch.217.6.637.20445
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2003
detail.hit.zdb_id:
201103-7
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