Synthesis, characterization of polyacrylate-g-Carbon Black and its application to soap-free waterborne coating

Polyacrylate-g-Carbon Black (abbrev. as gCB) was prepared by free radical p olymerization of acrylate monomers on the carbon black surface, which was i nitiated by a redox system consisting of cerium ammonium nitrate and hydrox ymethyl carbon black. gCB was ascertained by X-ray Photoelectron Spectromet ry (XPS). The optimum conditions of synthesis were studied. The stabilities of gCB dispersing in water were studied by zeta potential measurement and spectrophotometric analysis. The results showed that gCB could disperse in water better than the ungrafted carbon black, gCB could be dispersed in the soap-free hydrosol forming a colored soap-free water-borne coating with sa tisfactory comprehensive performance. (C) 2001 John Wiley & Sons, Inc.