Chelating Polymers. V. Aminoacetic Acid Chelating Polymers Derived from Polyglycidyl Methacrylate

Prototype chelating polymeric compounds were prepared by reacting the ligands, sodium aminoacetate and disodium iminodiacetate, with low molecular weight poly(glycidyl methacrylate). These prototype compounds were characterized, and their chelating characteristics with praseodymium(III), holmium(III), and copper(II) were established by ir spectroscopy, stability constant determinations, and capacity measurements. Cross-linked chelating copolymers were prepared by reacting the ligands, sodium aminoacetate and disodium iminodiacetate, with co-poly[glycidyl methacrylate]-[allyl methacrylate]. These copolymers were characterized, and their chelating characteristics with several rare earth ions and copper(II) were evaluated. The results indicate that whereas some separation of the rare earths can be achieved on the copolymer containing iminodiacetic acid ligands, high separation factors are not obtained because of the similarities in the stabilities of the complexes formed by the copolymer with the various rare earths.