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Article: To flocculate or not to flocculate IV: organic dispersing agents. (Technician's Notebook) (Column)
- Article from:
- Ceramic Industry
- Article date:
- September 1, 1994
- Author:
CopyrightCOPYRIGHT 1994 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The first three articles in this series describe the origin of the forces between colloidal solid particles dispersed in a liquid and how the balance and manipulation of these forces determine whether the suspension would be flocculated or deflocculated. Also described is how changes in pH or in the concentration of certain kinds of dissolved inorganic salts in the liquid phase could change the balance of the forces and change the state of dispersion.
Some of the most effective additives used to change the state of dispersion of colloidal suspensions, especially to stabilize them in the deflocculated condition, are organics. These additives are sometimes called ...