Abstract
An experimental program is described which evaluated the suitability of various surfactants as steric stabilizers for ethanol suspensions of alkoxy-precipitated TiO 2 particles. This experimental program included surfactant solubility, the effect of the polymer on the critical coagulation concentration of LiCl, and determination of the critical polymer concentration required to prevent coagulation. The results of these experiments allowed the selection of four surfactants from the twenty-seven evaluated which would sterically stabilize the particles against coagulation. In addition, hydroxypropyl cellulose allowed the precipitation to proceed in its presence. Adsorption during growth allowed for nearly complete protection from particle coalescence.
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