Synthesis of Chemically Bonded Polystyrene-Divinylbenzene on Silica by Free Radical Initiation with Gamma Radiation Cross-Linking

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Abstract
A procedure is described for direct chemical bonding of polystyrene-divinylbenzene (PS-DVB) to silica. The method is a two-step process which first bonds and polymerizes the material via peroxide initiation in the presence of azobisisobutyronitrile (AIBN). The second step involves cross-linking the bonded polymer by gamma irradiation. The success of the procedure is evaluated by carbon-hydrogen analysis and DRIFT spectroscopy of the product. Chromatographically the bonded material is tested by separations of alkylarylketones.