The measurement of electrophoretic mobility is commonly done by laser Doppler electrophoresis (LDE).
Recently, a more sensitive technique, phase analysis light scattering (PALS), has been developed with
particular benefits for application to nonpolar systems. We have carried out PALS measurements of the
electrophoretic mobility (μ) of modified silica particles as a function of applied electric field. Our results
are in poor agreement with LDE measurements on the same system. We show that this difference might
result from the way in which PALS measurements are performed and suggest that, in this case, the known
field-dependent mobility will cause artifacts in the PALS data. When the mobility is field-dependent, this
factor must be accounted for appropriately in PALS data analysis.
We report the first investigation of zirconyl 2-ethyl hexanoate micelles in decane using small-angle
neutron and X-ray scattering. Our results show that the micelles have a spherical shell structure consisting
of an inner core region with a radius of 6.3 Å that is surrounded by a shell 5.3 Å thick incorporating the
surfactant chain segments. From the contrast variation experiment, we calculated there were 33 surfactant
molecules/micelle. Finally, our small-angle neutron scattering experiments performed at 80 °C showed
there was no change in the shape or size of the micelles at the higher temperature.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.