Aksenovska O. Synthesis and properties of water-soluble oligoethers with various types of functional groups able to bind uranium and transuranium elements

Object of study is obtaining a new materials able to bind toxic and radioactive compounds. The aim of the work is development of synthesis methods of functionalized water-soluble oligoethers with different molecular architecture having ability to complex formation with uranium and polyvalent metals and the study of their structure and properties. Main results were obtained using the following investigation methods: IR-, UF and NMR - spectroscopy, gel permeation chromatography, differential scanning calorimetry, modified Wilhelmy method, photometric and pulsed laser techniques, alpha-spectrometry, gamma-spectrometry and chromatography-radiometric methods. Different molecular structure oligoethers containing fragments phosphoric, 4-aminosalicylic, ethylenediaminetetraacetic acids, guanidine and azomethine-phenolic were synthesized in this work. Methods of synthesis of block-oligoethers, which combine oligoethers fragments of different molecular mass and chemical structure were developed. The structure of oligoethers, as well as colloid-chemical properties of their water solutions was studied. The complexes of guanidinium-containing oligoether with uranium ions and other polyvalent metals were obtained. The efficiency of functionalized water-soluble oligoethers for the removing uranium and transuranium elements with object "Shelter" of the Chernobyl Nuclear Power Plant by methods complex formation and following ultrafiltration was estimated.