Abstract
The electrical conductivity of water-in-oil microemulsions is interpreted on the basis of the distribution of ionic charges among the droplets. The charging energy is approximated by the Born energy. In the interpretation, the hydrodynamic radius is distinguished from the water core radius. The Boltzmann statistics are compared with the fluctuation theory. The former approach is more realistic due to its consideration of the discrete nature of charge, while the latter better fits the data obtained with the AOT-water-isooctane system.
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References
Lagües M, Ober R, Taupin C (1978) J Phys Lett Fr 39:L487
Chittofrati A, Sanguineti A, Visca M, Kallay N (1991) Colloids Surfaces (submitted)
Eicke H-F, Borkovec M, Das-Gupta B (1989) J Phys Chem 93:314
Hall D (1990) J Phys Chem 94:4755
Kallay N, Chittofrati A (1990) J Phys Chem 94:4755
Tomić M, Kallay N (1991) J Phys Chem (submitted)
Halle B (1990) Progr Colloid Polym Sci 82:211
Karpe P, Ruckenstein E (1990) J Colloid Interface Sci 137:408
Zulauf M, Eicke H-F (1979) J Phys Chem 83:480
Bratko D, Woodward CE, Luzar A (1991) J Chem Phys 95:5318
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Kallay, N., Tomic, M. & Chittofrati, A. Conductivity of water-in-oil microemulsions: Comparison of the Boltzmann statistics and the charge fluctuation model. Colloid Polym Sci 270, 194–196 (1992). https://doi.org/10.1007/BF00652186
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DOI: https://doi.org/10.1007/BF00652186