Systhesis of Disk-Like Calcium Carbonate (Part 1)

The addition of amines such as ethylenediamine, diethylenetriamine and meramine in the course of carbonation of basic calcium carbonate promoted the formation of a disk-like calcium carbonate which is vaterite and 1-1.5μm in diameter and 0.1-0.2μm in thickness. On the other hand, dicarboxylic acids, carboxylic chelate compounds, and amino acids promoted the formation of cubic or spindle-like calcite. Diethylenetriamine which was adsorbed on the surface of calcium carbonate plays an important role in the formation of disk-like calcium carbonate.