Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 203, Issue 1-3, Pages 229-236Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-7757(01)01101-3
Keywords
titanium dioxide; ethylene glycol; electrophoresis; acoustophoresis; zeta potential
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The surface charge properties of colloidal titanium dioxide dispersions in ethylene glycol and water have been studied. The effect that silica and alumina coatings have on anatase particles is discussed, along with the difference in behaviour between anatase and rutile. Surface charge properties determined by electrophoresis show significant differences between each type of particle and between the two dispersion media. Small amounts of water have a significant effect on the behaviour of the particles, including the ability to change the sign of the charge for uncoated samples. (C) 2002 Published by Elsevier Science B.V.
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