聚丙烯腈
硝酸铈铵
螯合树脂
螯合作用
高分子化学
核化学
水溶液中的金属离子
吸附
羟胺
化学
共聚物
离子交换
腈
金属
无机化学
有机化学
离子
吸附
聚合物
作者
M. R. Lutfor,Sidik Silong,Wan Md. Zin,Lutfor Rahman,Mansor Bin Ahmad,Jelas Haron
标识
DOI:10.1016/s0014-3057(99)00286-4
摘要
The preparation of a chelating ion-exchange resin containing amidoxime functional group was carried out by polyacrylonitrile (PAN) grafted sago starch. The PAN grafted copolymer was obtained by free-radical initiating process using ceric ammonium nitrate as an initiator. Conversion of nitrile groups of the grafted copolymer into the amidoxime was carried out by treatment with hydroxylamine under alkaline solution. The chelating poly(amidoxime) resin was characterized by FT-IR spectra, TG and DSC analyses. The chelating behavior of the prepared resin was carried out by using some metal ions. A significant binding property of metal ions by the chelating resin was observed and the maximum copper capacity was 3.0 mmol g−1 at pH 6. The sorption capacities of metal ions by the resin were pH-dependent, and its selectivity towards these metal ions is in the following order: Cu2+ > Fe3+ > As3+ > Zn2+ > Ni2+ > Cd2+ > Co2+ > Cr3+ > Pb2+. The rate of exchange was rapid, i.e. t1/2<9 min, based on the exchange of copper ion.
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