Biogenic Hydroxylated Carboxylate Monomers Serve as Dispersants for Ceramic Particles
نویسندگان
چکیده
A total of 20 biogenic carboxylic acids, which contain one to three negatively charged -COOgroup(s), were investigated as dispersion additives in the processing of ceramic particles. Only carboxylic acids containing one or more hydroxyl groups were able to disperse ct-A120 3 particles in aqueous suspensions. Detailed studies of two carboxylic acids, citric acid and tricarballylic acid were undertaken: measurements of zeta potential, particle packing, and dispersant adsorption characeristics indicated that carboxylic acid groups and hydroxyl groups are both important for dispersion of the ceramic particles. Hydroxyl groups increased the adsorption of the molecules to the particles.
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