Measurement of the rigidity coefficient of a surfactant layer and structure of the oil or water microemulsion interface
نویسنده
چکیده
2014 We first deduce the rigidity coefficient K of a surfactant monolayer at the oil water interface from ellipsometric measurements. For our surfactant monolayer containing alcohol, we find unusually small values of K (K ~ kB T). We then study the oil microemulsion and water microemulsion interfaces, covered with the same film. On the microemulsion side of the film we find a perturbed zone, the thickness of which is comparable with the size of the structure in the bulk. The experimental results suggest that at ultralow surface tension, the recently proposed picture of an open interface, is quite valid. J. Physique Lett. 46 (1985) L-1005 L-1014 1 er NOVEMBRE 1985, Classification Physics Abstracts 07.60F 64.70J 68.10 82.70
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