Small-angle light scattering in dense microemulsions,transition from droplet to bicontinuous phase |
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Authors: | S H Chen F Mallamace N Micali S Trusso C Vasi |
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Institution: | (1) Istituto di Tecniche Spettroscopiche del CNR, Salita Sperone 31, C.da Papardo, Messina, Italy;(2) Department of Nuclear Engineering, Massachusetts Institute of Technology, 02139 Cambridge, MA, USA;(3) Dipartimento di Fisica dell'Università, Villaggio S. Agata, C.P. 55, I-98166 Messina, Italy |
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Abstract: | Summary We have performed extensive small-angle light scattering (SALS) measurements on a three-component microemulsion (AOT/decane/water)
as a function of the dispersed phase concentration and the temperature. All samples have a water/AOT molar fractionw=40.8. Such a system presents a very complex phase diagram with many structural configurations. With the SALS technique, we
have been able to observe all the phase separation lines. In particular we give details on the system structure on the percolation
phenomenon and on the bicontinuous phase recently observed. In particular we show that the percolation is driven by a long-scale
aggregation between microemulsion droplets.
Paper presented at the I International Conference on Scaling Concepts and Complex Fluids, Copanello, Italy, July 4–8, 1994. |
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Keywords: | Brillouin and Rayleigh scattering |
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