A) Adsorption Isotherms andzPotentials:Adsorptionisotherms were measured at 251C using the depletion method asdescribed in detail elsewhere.33Thezpotential measurementswere performed with a Colloidal Dynamics, AcoustoSizer II(Sydney, Australia) using the thin double layer model.34Ceram-ic glaze suspensions were prepared at 10 wt% solids with thedesired concentration of NaCl and required pH forzpotentialmeasurements. After pH adjustment the suspension was allowedto equilibrate while stirred overnight. If necessary a small pHadjustment was made immediately before thezpotential meas-urement was performed. For measurement of thezpotential ofthe ceramic glaze as a function of surfactant concentration, theautomatic addition (titration) mode of operation was used. Theelectrolyte ions produce an electrokinetic sonic amplitude (ESA)and attenuation signal of their own that can become a signifi-cant portion of the total ESA and attenuation signal at saltconcentrations above about 0.1MNaCl. For this reason, back-ground electrolyte corrections were made for the 0.1MNaClsuspensions. The signals from solutions of CPC and SDBS attheir highest concentrations were measured and used as a back-ground file to correct thezpotentials of the suspensions ofceramic glaze. Since the correction produced less than 1 mVchange inzpotential, the contribution to the ESA signal fromthe surfactant solution (micelles) was deemed negligible. TheAcoustosizer’s attenuation method of estimating particle sizewas used. The resulting average particle sizes reported by theAcoustosizer depended upon the particular solution conditions,but ranged from about 3 to 8mm, consistent with the averageparticle size of 4.8 microns determined by laser light scatteringwith the Malvern Mastersizer. Any two measurements of thesame condition on two different suspensions were within lessthan 20% agreemen