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Measuring the Isoelectric Point of Ceramic Powder Suspennsions: A Pre-Standarization Study

Published

Author(s)

M Naito, Vincent A. Hackley, R Wasche

Abstract

The isoelectric point (IEP) is a key material property for aqueous-based processing of advanced ceramic powders. The IEP characterizes the acid-base behavior of the powder surface, which in turn influences powder dispersion and chemical interactions at the powder surfaces. However, international standards for IEP determination are generally lacking. We describe the preliminary results of an international collaborative pre-standards investigation, in which we examine the influence of various material, instrument and measurement factors on IEP determination in moderately concentrated suspensions. These studies focused on electrokinetic sonic amplitude (ESA), colloid vibration potential (CVI), and particle charge determination (PCD), because of their capacity to analyze opaque suspensions.
Citation
Transactions of the American Ceramic Society
Volume
133
Issue
No. 15

Keywords

ceramics suspensions, colloid vibration current, concentrated suspensions, electrokinetic sonic amplitude, isoelectric point, particle charge detection, slurries, standardization, zeta potential

Citation

Naito, M. , Hackley, V. and Wasche, R. (2002), Measuring the Isoelectric Point of Ceramic Powder Suspennsions: A Pre-Standarization Study, Transactions of the American Ceramic Society (Accessed May 24, 2024)

Issues

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Created December 31, 2001, Updated October 12, 2021