![]() ![]() It is found that an optimum amount of 1.4 mass% dispersant at the inherent pH (>9.2) can be attached fully onto the nanoparticles with sufficient electrosteric dispersion effects, suitable for casting applications. ![]() A nanoscale colloidal hypothesis is proposed to illustrate that the addition of different amounts of dispersant influences on both the stability and the electrokinetic and rheological properties of concentrated ZrO 2 nanosuspensions. Good agreement was obtained from relationship between the electrokinetic characteristics (zeta potential, ESA signal), viscosity, and its pH dependence for each concentrated ZrO 2 nanosuspension with different dispersant concentration in the range of 0.9–1.5 mass%. A comparative study of the electrokinetic characteristics and the rheological behavior of concentrated ZrO 2 nanosuspensions has been done. This study reports useful application of the electrokinetic sonic amplitude (ESA) technique in combination with rheometry and electron microscopy techniques for direct probing the stability of low and high-concentrated zirconia (ZrO 2) nanosuspensions in the presence of an alkali-free anionic polyelectrolyte dispersant Dolapix CE64. ![]()
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