Polymer resin uranium

It has been tried to prepare polymer resin which has the appropriate structure and functional groups as an adsorbent for extraction of uranium from sea water. 

A polymer-bound analog of the p-sulfonato-calix[6]arenes is described in a Shinkai patent [31,32], which states that the hexakis(carbetoxymethyl)ether of p-sulfonatocalix[6]arene was partially nitrated, ami-nated, and fixed on crosslinked chloromethylated polystyrene. This resin is stated to absorb 108 ixg of uranium... 

Egawa, H., Nonaka, T., Ikari, M., preparation of macroreticular chelating resins containing dihydroxyphosphino and/or phosphono groups and their adsorption ability for uranium. J. Appl. Polym. Sci. 29, 1984,2045-2055. 

The dihydroxamic acid polymer containing carboxylic acid groups as well as hydroxamic acid groups was used to examine the adsorptivity for uranium in seawater the adsorptivity was 40 pg/g resin in 8 days116). 

Polymers can complex the uranyl ion, the most common naturally occurring, water-soluble form of uranium, for both environmental and industrial purposes. Select salts of diacids, dioximes, etc., salts of polyacrylic acids, polyacrylic acid itself and a wide variety of carboxylic acid-, sulfonate- and sulfate-containing resins are capable of removing the uranyl ion to 10" to 10 mol These complexed uranyl compounds have... 

Dragan, E.S., Avram, E., Axente, D., Marcu, C. (2004) Ion-exchange resins El. Functionalization-morphology correlations in the S3mthesis of some macroporous, strong basic anion exchangers and uranium-sorption properties evaluation. Journal of Polymer Science Part A Polymer Chemistry, 42, 2451-2461. 

Egawa, H., M. Makayama, T. Nonaka, and E. Sugihara, Recovery of Uranium fi om Sea Water Influence of Crosslinking Reagent on Uranium Adsorption of Macro-reticular Chelating Resin Containing Amidoxime Group, J. Appl. Polym. Sci., 33, 1993-2005, 1987. 

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