Dielectric properties of water/lecithin/cyclohexane gels |
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Authors: | G La Manna V Turco Liveri F Aliotta M E Fontanella P Migliardo |
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Institution: | (1) Dipartimento di Chimica Fisica, Università di Palermo, Via Archirafi 26, 90123 Palermo, Italy;(2) Istituto di Tecniche Spettroscopiche del C.N.R., Messina;(3) Dipartimento di Fisica, Università di Messina, Messina, Italy |
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Abstract: | Dielectric relaxation measurements in the frequency range 0.1–15 GHz have been carried out on water/lecithin/cyclohexane gels using a time domain reflectometry method (TDR). Dielectric dispersions describable in terms of a power law typical of percolated systems, but with exponents significantly different from those characterizing statically or dynamically percolated systems are observed. The dielectric dispersions, attributed to water and/or lecithin head group rotational motions, indicate that these motions are characterized by a wide spectrum of relaxation times. |
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Keywords: | Gel water/lecithin aggregates dielectric relaxation |
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