Facile surface modification of nanoprecipitated calcium carbonate by adsorption of sodium stearate in aqueous solution

A simple and solvent free two-step process for nanosized and surface-modified precipitated calcium carbonate (ns-PCC) synthesis has been proposed. Synthesized ns-PCC was thoroughly characterized by infra-red (IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and Langmuir adsorption study. Dynamic laser scattering (DLS) results on particle size showed a good correlation with those obtained by the proposed empirical model. Two aspects of nucleation and surface modification and the relationship of particle size on impact experimental parameters were also discussed.