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Efficient Functionalization of Polyethylene Fibers for the Uranium Extraction from Seawater through Atom Transfer Radical Polymerization

Journal Article · · Industrial and Engineering Chemistry Research
 [1];  [1];  [2];  [3];  [4];  [4];  [5];  [1]
  1. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States
  2. Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States
  3. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States
  4. Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington, United States
  5. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States; Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States
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 (RIGP) 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 RIGP. 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).
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1398202
Report Number(s):
PNNL-SA-128982; AF5855000
Journal Information:
Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 38 Vol. 56; ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

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