RECOVERY OF URANIUM FROM SEAWATER .5. PREPARATION AND PROPERTIES OF THE MACRORETICULAR CHELATING RESINS CONTAINING AMIDOXIME AND OTHER FUNCTIONAL-GROUPS
The authors have synthesized macroreticular chelating resins containing amidoxime groups from acrylonitrile (AN)-divinylbenzene (DFB)-alkyl acrylate, alkyl methacrylate, or vinylpyridine (VPy) copolymer beads. It was found that the chelating resin (RNMH)-containing amidoxime groups prepared from AN-DVB-methyl acrylate (MA) indicated the highest adsorption ability for uranium in seawater. The adsorption ability for uranium was greatly influenced by the physical pore structure (macropore) and the pore structure formed by the swelling (micropore).