Numéro
J. Phys. IV France
Volume 03, Numéro C8, Décembre 1993
IX International Conference on Small Angle Scattering
Page(s) C8-161 - C8-164
DOI http://dx.doi.org/10.1051/jp4:1993831
IX International Conference on Small Angle Scattering

J. Phys. IV France 03 (1993) C8-161-C8-164

DOI: 10.1051/jp4:1993831

Small angle neutron scattering study on a phase separation in a 3-component microemulsion system

H. SETO1, E. YOKOI1, S. KOMURA1, D. SCHWAHN2, K. MORTENSEN3, J. SUZUKI4, M. OHNUMA4 and Y. ITO5

1  FIAS, Hiroshima University, Higashihiroshima 724, Japan
2  IFF, KFA Jülich, 5170 Jülich, Germany
3  Risø National Laboratory, 4000 Roskilde, Denmark
4  Department of Neutron Scattering, JAERI, Tokai 319-11, Japan
5  ISSP University of Tokyo, Roppongi, Tokyo 106, Japan


Abstract
In literature, the 3-component microemulsion system consisting of AOT, water and n-decane is known to belong to 3D-Ising universality class so far. Recently, we have found that the critical exponent of the susceptibility is the meanfield value at nearcritical region, and at the same time we have observed a small change of the water droplet size approaching a phase separation point. In this work, further small angle neutron scattering results are presented obtained at the new SANS equipment in JAERI. The evidences described above were confirmed and a detailed phase diagram has been obtained, but the critical point was not found. These results seem to suggest that the change of the droplet structure on approaching the critical point affects the critical point itself.



© EDP Sciences 1993