SYNOPSISSome new cellulosic materials, suitable for the adsorption of noble metal ions, were synthesized by chemical and electrochemical modification of cellulose. The polymerizable groups were introduced in cellulose with -80% yield of substitution by esterification with acryloyl chloride. The vinyl monomers (4-vinylpyridine, 1-vinylimidazole, l-vinyl-2-pyrrolidinone, and 9-vinylcarbazole) were readily grafted into cellulose acrylate via radical polymerization in acetonitrile. The grafted copolymers of cellulose with 4-vinylpyridine and 4-vinylimidazole were reacted with methyl iodide and the corresponding 1-methylpyridinium iodide (6) and 3-methylimidazolium iodide (7) copolymers of cellulose were obtained. Copolymers 6 and 7 were transformed into new polymeric regents, differing in anions (ClO;, CF&OO-, NO;, p-TsO-, BF;, PF,) by using a supporting electrolyte carrying the desired anions through the ion-exchange-electrochemical oxidation of the released iodide at a controlled anodic potential.
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