SYNTHESIS AND CHARACTERIZATION OF CELLULOSE N-METHYLOLACRYLAMIDE GLYCIDYL METHACRYLATE METHACRYLIC-ACID CATION-EXCHANGE RESINS

New cation exchange resins based on cellulose/N-methylolacrylamide (NM A)/ glycidyl methacrylate (GMA)/methacrylic acid (MA) were prepared by polymerizing highly concentrated mixtures of NMA/GMA/MA in the presen ce of cellulose using a sodium persulfate/sodium sulfite redox system under different conditions including the concentrations of the redox s ystem components, NMA and GMA as well as the polymerization temperatur e. Polymerization conditions were selected to synthesize three resins of different carboxy and nitrogen contents. Potentiometric titration s howed that these resins were weakly basic cation exchangers of differe nt strength. Water solubility and swellability as well as durability o f these resins were examined.