Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 56, Issue 38, Pages 10826-10832Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b00482
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Funding
- U.S. Department of Energy (DOE), Office of Nuclear Energy
- U.S. Department of Energy [DE-AC05-000R22725]
- United States Government
- Department of Energy
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Brush-on-brush structures are proposed as one method to overcome support effects in grafted polymers. Utilizing glycidyl methacrylate (GMA) grafted on polyethylene (PE) fibers using radiation-induced graft polymerization (RIG?) provides a hydrophilic surface on the hydrophobic PE. When integrated with atom transfer radical polymerization (ATRP), the grafting of acrylonitrile (AN) and hydroxyethyl acrylate (HEA) can be controlled and manipulated more easily than with RIG?. Poly(acrylonitrile)-co-poly(hydroxyethyl acrylate) chains were grown via ATRP on PE-GMA fibers to generate an adsorbent for the extraction of uranium from seawater. The prepared adsorbents in this study demonstrated promise (159.9 g-U/kg of adsorbent) in laboratory screening tests using a high uranium concentration brine and 1.24 g-U/kg of adsorbent in the filtered natural seawater in 21 days. The modest capacity in 21 days exceeds previous efforts to generate brush on -brush adsorbents by ATRP while manipulating the apparent surface hydrophilicity of the trunk material (PE).
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