偕胺肟基高分子材料的可控合成及对铀的吸附性能研究

Abstract

Abstract: The divinylbenzene (DVB) and vinylbenzyl chloride (VBC) were used as raw materials, then the Atom Transfer Radical Polymerization (ATRP) method was used to graft acrylonitrile, finally, polyacrylonitrile powder reacted with aqueous hydrochloric acid hydroxylamine to prepare amidoxime ploymer materials. Using fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) techniques, the chemical compositions and microstructure of the absorbent were analyzed. The effects of pH values of initial uranyl ion and different ratios of absorbent to uranyl ion on the absorption were studied. The results showed that the best absorption efficiency occurred when the ratio of absorbent to uranyl ion was 2∶1. The absorption capacity can reach to 24.2 mg/g when the pH value was 4 at this ratio. Furthermore, the kinetic data can be well fitted with the second-order absorption kinetic model.

Key words: amidoxime, polymer materials, controllable synthesis, Uranium, absorption property

CLC Number:

TL212.5

Gong Ziyue, Chi Fangting, Wei Guilin, Zhang Shuo, An Peng. Controlled synthesis of amidoxime polymer materials and its absorption of Uranium[J].RADIATION PROTECTION, 2017, 37(2): 145-152.

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Controlled synthesis of amidoxime polymer materials and its absorption of Uranium

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