| Numéro |
J. Phys. IV France
Volume 03, Numéro C8, Décembre 1993
IX International Conference on Small Angle Scattering
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|---|---|---|
| Page(s) | C8-141 - C8-144 | |
| DOI | https://doi.org/10.1051/jp4:1993826 | |
IX International Conference on Small Angle Scattering
J. Phys. IV France 03 (1993) C8-141-C8-144
DOI: 10.1051/jp4:1993826
1 Laboratoire de Physico-Chimie des Colloïdes, Université de Nancy I, Faculté des Sciences, BP. 239, 54506 Vandoeuvre les Nancy, France
2 Laboratoire de Physico-Chimie des Colloïdes, Université de Nancy I, Faculté des Sciences, BP. 239, 54506 Vandoeuvre les Nancy, France
© EDP Sciences 1993
J. Phys. IV France 03 (1993) C8-141-C8-144
DOI: 10.1051/jp4:1993826
Scattering by polydisperse hard sticky spheres and the Porod-Auvray law for mixtures of large and small particles
J.C. RAVEY1, S. SAUVAGE1 and M.J. STEBE21 Laboratoire de Physico-Chimie des Colloïdes, Université de Nancy I, Faculté des Sciences, BP. 239, 54506 Vandoeuvre les Nancy, France
2 Laboratoire de Physico-Chimie des Colloïdes, Université de Nancy I, Faculté des Sciences, BP. 239, 54506 Vandoeuvre les Nancy, France
Abstract
The structure of fluorinated gel-emulsions made of water globules dispersed into an (oil) fluorocarbon phase has been investigated by SANS, the water volume fraction being as large as 98%. The oil continuous phase is a water swollen micellar phase, with a volume fraction of the micelles in the range of 10 - 40 %. The determination of the specific area of the water globules was performed by using the Porod-Auvray law. The validity of the approximation where the heterogeneous micellar phase is considered as being a homogeneous continuum is discussed by comparing to calculations for polydisperse hard-sticky spheres within the P.Y. approximation.
© EDP Sciences 1993