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Publikacje Pracowników Politechniki Lubelskiej
Status:
Autorzy: Kosmulski Marek, Mączka Edward, Podolak D.
Rok wydania: 2012
Język: angielski
Źródło: 19th International Symposium on Surfactants in Solution, June 24-28, 2012, Edmonton, Alberta, Canada
Państwo wystąpienia: POLSKA
Efekt badań statutowych NIE
Abstrakty: angielski
The effect of ionic surfactants on the zeta potential of nanoparticles of metal oxides was studied at various solid-to-liquid ratios in aqueous systems and in nonaqueous solvents. The concentration of surfactant (per unit of volume), which induced a sign reversal depends on the solid-to-liquid ratio. In contrast the concentration of surfactant (per unit of surface area), which induced a sign reversal was rather insensitive to the solid-to-liquid ratio. The electrokinetic curves obtained at various solid-to-liquid ratios plotted against the concentration of surfactant per unit of surface area produced one master curve. A kinetic study indicated that the electrokinetic potential in dispersions containing ionic surfactants and nanoparticles of metal oxides did not change on aging, and fresh dispersions showed similar behavior as those aged for several days before the electrokinetic measurementThe effect of ionic surfactants on the zeta potential of nanoparticles of metal oxides was studied at various solid-to-liquid ratios in aqueous systems and in nonaqueous solvents. The concentration of surfactant (per unit of volume), which induced a sign reversal depends on the solid-to-liquid ratio. In contrast the concentration of surfactant (per unit of surface area), which induced a sign reversal was rather insensitive to the solid-to-liquid ratio. The electrokinetic curves obtained at various solid-to-liquid ratios plotted against the concentration of surfactant per unit of surface area produced one master curve. A kinetic study indicated that the electrokinetic potential in dispersions containing ionic surfactants and nanoparticles of metal oxides did not change on aging, and fresh dispersions showed similar behavior as those aged for several days before the electrokinetic measurement