EFFECT OF BINDER CHARACTERISTICS ON THE STRENGTH OF AGGLOMERATES PREPARED BY THE WET-METHOD-II

The effect of the physicochemical properties of binders on the strengt h of granules prepared by the wet method was investigated using hydrop hobic and hydrophilic powders with various polymer binders, A crushing test of granules and the amount of fine granules generated during a s ieving test were carried out in order to estimate the strength of the granules. In all the powder/binder systems, the surface polarities of both powders and binders, as well as the degree of polymerization of a binder, are important factors in determining the strength of granules , That is, binders and powders whose polarities are similar are capabl e of producing strong granules. In some systems, the strength of granu les increased with the degree of polymerization of the polymer binders .