Water in microemulsions

Thus it can be concluded that the structure of microemulsions depends on the structure of surfactant and cosurfactant. Moreover, this structure also determines the amount of solubilisation of oil and or water in microemulsions. 

Shah, D. O., and Hamlin, R. M. J. (1971), Structure of water in microemulsions Electrical birefringence and nuclear magnetic resonance studies, Sciences, 111, 483 485. 

Figure 14. Experimental and theoretical curves of the fraction of water in microemulsion versus salinity. Polymer concentration is 750 ppm. T=22°C.

Tondre, C. and Zana, R., Rate of dissolution of n-alkanes and water in microemulsions of water/sodium dodecyl sulfate(l/3) -i- l-pentanol(2/3)/n-dodecane in rapid mixing experiments, J. Dispersion ScL TechnoL, 1, 179, 1980. 

In Chapter 3, Ezrahi et al. (Israel) discuss the use of subzero temperature behavior of water in microemulsions as an analytical tool to enable better understanding of the interfacial behavior of the surfactant. Microemulsions are cooled to subzero temperatures and the water in the internal reservoir freezes. In the heating cycle the thawing of the water is measured. The authors critically discuss the problems related to the use of this technique and the advantages derived from it. 

Erzahi, S., Anserin, A., Fanun, M., and Garti, N. 2001. Subzero behaviour of water in microemulsions. In Thermal Behaviour of Dispersed Systems. Marcel Dekker, New York, Chapter 3, pp. 59-120. 

In order to discriminate between these two models, NMR measurements of deuterated water in microemulsions have been carried out. Two NMR lines were observed in the NMR spectra (Fig. 14) for the various microemulsions without particles of silver bromide. 

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