Abstract

The synthesis of a large range of supports based on silica functionalized by a new derivative of β-cyclodextrin, 2-hydroxy-3-methacryloyloxypropyl-β-cyclodextrin (βCDMAHP monomer), is described. Two methods of reaction were chosen: (1) coating via a radical polymerization of the βCDMAHP monomer (E1 series) and (2) radical grafting after silanization of silica using γ-methacryloyltrimethoxysilane (G1 series). As a preliminary step, a detailed spectroscopic characterization of the βCDMAHP was undertaken. Subsequently, within the two approaches, the experimental conditions were varied in order to investigate the effect on the βCD content in the functionalized supports. The changes in the porosity of the silica were also analysed. Finally, a comparison of the two methods is discussed, bearing in mind that these sorbents are to be used for water decontamination applications.

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