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Dynamics of w/o AOT microemulsions studied by neutron spin echo

✍ Scribed by M Hirai; R.K Hirai; H Iwase; S Arai; S Mitsuya; T Takeda; H Seto; M Nagao

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
109 KB
Volume
60
Category
Article
ISSN
0022-3697

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✦ Synopsis

By using neutron spin echo and synchrotron radiation small-angle X-ray scattering, we have studied the structure and dynamics of water/sodium bis(2-ethylhexyl)sulfosuccinate/d 16 -n-heptane microemulsion with varying water/surfactant molar ratio, w 0 . We have found the anomalous q-dependence of the effective diffusion coefficient D eff at low w 0 whose peak-position at low w 0 does not satisfy the predicted relation of qR p (R, microemulsion radius). This would relate to the presence of the oligomeric phase at low w 0 observed by SAXS.

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