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. (C) 2010 Elsevier B.V. All rights reserved.