Abstract
The interaction between hydrocarbon and fluorocarbon surfactants has been studied through flocculation-redispersion of monodispersed ferric hydro sols. When a very low concentration of anionic hydrocarbon or anionic fluorocarbon surfactant is added to positively charged sols, the sols flocculate. Whether the flocculated sols redisperse upon further addition of fluorocarbon or hydrocarbon surfactant has been investigated by measuring zeta potential, turbidity and particle size. From the results of redispersion of the sols, it is found that the hydrophobic interaction between anionic fluorocarbon and anionic hydrocarbon surfactants is less significant than that between anionic-nonionic fluorocarbon and hydrocarbon surfactants.
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