TEMPERATURE-DEPENDENT PHASE-TRANSITIONS IN WATER-OIL-SURFACTANT MIXTURES - EXPERIMENT AND THEORY

Authors
VOLLMER D VOLLMER J STREY R
Citation
D. Vollmer et al., TEMPERATURE-DEPENDENT PHASE-TRANSITIONS IN WATER-OIL-SURFACTANT MIXTURES - EXPERIMENT AND THEORY, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(3), 1996, pp. 3028-3031
Citations number
18
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
54
Issue
3
Year of publication
1996
Pages
3028 - 3031
Database
ISI
SICI code
1063-651X(1996)54:3<3028:TPIWM>2.0.ZU;2-P
Abstract
We investigate temperature induced phase transitions in mixtures of wa ter, oil, and a nonionic surfactant. By microcalorimetric measurements it is shown that the droplet-lamellar transition shows hysteresis so that it is strongly first order. The position of this transition and o f the emulsification boundary are quantitatively described by an inter facial model which considers solely the temperature dependence of the spontaneous curvature. There is no st parameter in the model. Remarkab ly, the positions of both boundaries do not depend on the bending modu li.