Measurement of the zeta potential of oil drops with the spinning tube zetameter
Résumé
The spinning tube zetameter, an apparatus which was utilized up to now to keep a gas bubble from settling while electrophoretic measurement was carried out, can be used to measure the zeta potential of an oil drop as well. This piece of equipment is brought into play for estimating the influence of various formulation variables (pH, ionic strength, surfactant type or mixture) on the zeta potentials of oil drops. The results are compared to those reported in the literature.
Mots clés
Engineering controlled terms: Bubbles (in fluids)
Electrophoresis
Ionic strength
Mixtures
Oils and fats
Surface active agents Engineering uncontrolled terms: Spinning tubes
Zeta potentials Engineering main heading: Dispersions Fluids engineering descriptors: bubble
droplet
emulsion
gas
measurement method
spinning