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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) October 15, 2012

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

Seyhan Şener Başarır and Nursel Pekel Bayramgil
From the journal Radiochimica Acta

Abstract

Graft copolymers were prepared by 60Co-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 NH2OH · 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.


* Correspondence address: Hacettepe University, Faculty of Science, Chemistry Department, 06800 Beytepe, Ankara, Türkei,

Published Online: 2012-10-15
Published in Print: 2012-12

© by Oldenbourg Wissenschaftsverlag, München, Germany

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