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Phosphoramidate‐functionalized Merrifield resin: synthesis and application in actinide separation
Author(s) -
Das Dhrubajyoti,
Sivaramakrishna Akella,
Brahmmananda Rao CVS,
Sivaraman N,
Vijayakrishna Kari
Publication year - 2018
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5513
Subject(s) - phosphoramidate , thermogravimetric analysis , nitric acid , elemental analysis , divinylbenzene , fourier transform infrared spectroscopy , polystyrene , materials science , polymer chemistry , nuclear chemistry , chemistry , copolymer , styrene , chemical engineering , organic chemistry , composite material , polymer , stereochemistry , engineering
A novel phosphoramidate‐functionalized polymeric resin was synthesized by anchoring diethyl (3‐(1 H ‐imidazol‐1‐yl)propyl)phosphoramidate group with chloromethylated polystyrene divinylbenzene resin. The grafted resin was characterized using elemental analysis, Fourier transform infrared, solid‐state 31 P NMR energy‐dispersive X‐ray spectroscopies, and thermogravimetric analysis. The surface morphology of the functionalized resin was investigated using scanning electron microscopy and the surface area was measured with Brunauer–Emmett–Teller analysis. Sorption affinities of the functionalized resin towards actinides such as Th(IV) and U(VI) were determined under various concentrations of nitric acid solution (0.01–6 mol L −1 ). Desorption of the actinides from the loaded resin was performed using a solution of 0.01 mol L −1 nitric acid. Reusability of the grafted resin was studied over various successive cycles and the stability of the functional groups on the synthesized resin was monitored using various analytical techniques. © 2017 Society of Chemical Industry