FLUIDITY OF CACO3-H2O SUSPENSION WITH COMB TYPE OF POLYMER

The fluidity of CaCO3 suspension with various types of polymer contain ing graft chain of polyethylene oxide have been investigated. With inc reasing the dosage of polymer, the fluidity of suspension was increase d. This is because the amount of retention water in clusters of CaCO3 suspension is reduced by the steric hindrance effect of adsorbed polym er. The smaller the amount of retention water, the larger the fluidity of suspension. Over the amount of saturated adsorption of polymer, th e fluidity of CaCO3 suspension is increased gradually with the dosage of polymer. The viscosity of suspension with polymer having low molecu lar weight of graft chains is lower than that of suspension with high molecular weight of graft chain, because the amount of retention water in clusters of CaCO3 suspension with polymer having shorter graft cha ins are smaller than that of CaCO3 suspension with polymer having long er graft chains.