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The Sodium Loss and Transport through the Walls of the Ceramic Discharge Tube of High Pressure Sodium Lamps
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Stabilisation of CuO Aqueous Suspensions
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Effect of Oxygen Content on Impedance Spectra of PtRh Electrodes for NOX Sensing Applications
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Stabilisation of CuO Aqueous Suspensions

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Abstract:

Obtaining ceramic bodies with enhanced mechanical properties via colloidal processing requires efficient dispersion of the ceramic powders. In this work, the dispersive effect of three low molecular weight quaternary ammonium hydroxides with different alkyl groups upon stabilisation of CuO aqueous suspensions is studied and compared with that of Tiron, a compound based on the benzene molecule. The purpose is to illustrate the effect of molecular structure, size and charge location upon dispersing effectiveness. To access these parameters, rheological and electrophoretic measurements using both bare and surface charge modified CuO were made. Tiron® revealed to be the most efficient dispersant for CuO in water, rendering viscosity values below 1 Pa⋅s and the highest variation in zeta potential amplitude.

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Advanced Materials Forum III View Preview

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

1369-1373

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.1369

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Online since:

May 2006

Authors:

Mafalda Guedes, Alberto C. Ferro, José Maria F. Ferreira

Keywords:

Colloidal Processing, CuO, Tetralkylammonium Hydroxides, Zeta-Potential

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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