Solvents, in which ionic surfactants do not affect the zeta potential

The influence of solvent polarity on adsorption behavior of DOSS (anionic surfactant) has been studied by means of electroacoustic method. DOSS substantially affected the ζ potential of titania and alumina dispersed in methanol and in hydrocarbons. In 1-propanol, 2-propanol, and 1-butanol, which have intermediate polarity between methanol and hydrocarbons, the effect of the ionic surfactant on the ζ potential of solid particles was less significant.

The effect of DOSS on the ζ potentials of oxide dispersions in 2-propanol. Sign reversal is not observed.Figure optionsDownload high-quality image (63 K)Download as PowerPoint slide