Abstract
Adsorption and polymer modification of colloidal silica by radical copolymerization of surface active monomers, i.e., polymerizable surfactant having a vinyl end group, were investigated. Radical copolymerization of amide ammonium monomer and ammonium-type cross-linker (monomer) using a initiator of 2,2′ -azobis(2-amidinopropane) dihydrochloride on colloidal silica successfully led to the formation of monodispersed cross-linked polymer/SiO2 composites, which is stable in organic solvents. Addition of carboxylic acid monomer to the reaction system of two ammonium monomers gave homogeneously polymer-coated silica composites having carboxyl groups. The composites show ξ-potential of –36mV and 0mV in water and ethanol, respectively.
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Moon, JM., Lee, KT., Kim, BS. et al. Modification of Monodisperse Colloidal Silica by Radical Copolymerizatoin of Cationic Surface Active Vinyl Monomers. Polym J 41, 208–213 (2009). https://doi.org/10.1295/polymj.PJ2008277
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DOI: https://doi.org/10.1295/polymj.PJ2008277