MECHANOCHEMICAL TREATMENT OF CACO3 FOR REDUCING HYDROPHYLICITY

The article discusses the modification of CaCO3 hydrophylicity by mech anochemical methods, in view of its compatibilization with hydrophobic polymeric matrices, The observation was made that by ultrahigh-speed stirring of the solutions of polybutadiene and acrylic acid--in which CaCO3 powder has been suspended-as well as by vibratory milling of CaC O3 in the presence of isoprene, modifications in the hydrophylicity of the anorganic particles occur. The treatment's efficiency depends on two process parameters: duration and monomer/charge ratio.