Phosphoramidate‐functionalized Merrifield resin: synthesis and application in actinide separation

A novel phosphoramidate‐functionalized polymeric resin was synthesized by anchoring diethyl (3‐(1H‐imidazol‐1‐yl)propyl)phosphoramidate group with chloromethylated polystyrene divinylbenzene resin. The grafted resin was characterized using elemental analysis, Fourier transform infrared, solid‐state...

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Bibliographic Details
Published in:Polymer international 2018-04, Vol.67 (4), p.374-379
Main Authors: Das, Dhrubajyoti, Sivaramakrishna, Akella, Brahmmananda Rao, CVS, Sivaraman, N, Vijayakrishna, Kari
Format: Article
Language:English
Subjects:
Actinides
Anchoring
Chemical synthesis
Divinylbenzene
Electron microscopy
Fourier transforms
Functional groups
functionalization
Infrared analysis
Nitric acid
NMR
Nuclear magnetic resonance
phosphoramidate grafted resin
Polystyrene
Polystyrene resins
resin
Scanning electron microscopy
solid phase extraction
Thermogravimetric analysis
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Summary:A novel phosphoramidate‐functionalized polymeric resin was synthesized by anchoring diethyl (3‐(1H‐imidazol‐1‐yl)propyl)phosphoramidate group with chloromethylated polystyrene divinylbenzene resin. The grafted resin was characterized using elemental analysis, Fourier transform infrared, solid‐state 31P 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 A novel phosphoramidate functionalized polymeric resin was synthesized by anchoring diethyl (3‐(1H‐imidazol‐1‐yl)propyl)phosphoramidate with Merrifield resin. Designed resin was tasted for solid‐liquid extraction of actinides and its highly selective towards Th(IV) over U(VI). This resin is stable in high acidic conditions and reusable for various successive cycles without any loss of the functional groups.
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.5513