Study on the Synthesis of Macroreticular Chelating Resins Containing Amidoxime Groups and Their Properties of Recovery of Uranium

摘要

In this paper, macroreticular chelating resins containing amidoxime groups were successfully synthesized by divinylbenzene cross-linking acrylonitrible (AN) copolymer beads as skeleton using suspension polymerization. Influence factors of DVB-AN beads' amidogen, such as reaction medium, reaction ratio, reaction temperature and time etc. were studied in detail. Chelating resins with amidoxime groups having different physical properties and monomer composition were prepared successfully. The resins had a chemical adsorption capacity over 4.0 mmol per. gramme of the dried resin, and an ideal result of recovered uranium under the conditions as the paper described.