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Graft copolymers were prepared by  60 Co- γ  irradiation of binary mixture of ethyl cellulose (EC) and acrylonitrile (AN). Conversion %-dose graphs were obtained, and 95% copolymer yield has been reached at around 8 kGy dose. Conversion of nitrile groups to amidoxime (AO) were achieved by aqueous solutions of NH 2 OH · HCl–NaOH at 50 ºC. The amidoxime conversion was followed by using FT-IR spectrophotometer and determined as percentage. After 72 h period, nearly 100% amidoxime conversion was provided. The structures of EC- g -AN and EC- g -AO were characterized by FTIR/ATR, TGA, and SEM methods.

radiochimica acta

The uranium recovery from aqueous solutions using amidoxime modified cellulose derivatives. I. Preparation, characterization and amidoxime conversion of radiation grafted ethyl cellulose-acrylonitrile copolymers