Preparation of Iodine-Loaded Polyvinylpyrrolidone/Polystyrene Spherical Catalyst

Surface property of polystyrene particles was modified with copolymerized polyvinylpyrrolidone,and a uniform and recyclable iodine catalyst particles were prepared by loading iodine onto the copolymer particles.IR spectral characterization indicates that the polyvinylpyrrolidone was incorporated into the polymer chain of the polystyrene.The Loading of iodine molecules was achieved by the interaction with pyrrolidone residues,which leads to a significant spectral change of the pyrrolidone group.