Quaternized and Hyperbranched Amidoxime-Modified Ultra-High-Molecular-Weight Polyethylene Fiber for Uranium Extraction from Seawater.

ABSTRACT: The most promising material for uranium extraction from saltwater is generally acknowledged to be fibrous adsorbents. An irradiation-modified anti-biofouling ultra-high-molecular-weight polyethylene (UHMWPE-g-PGAO) fibrous adsorbent with a hyperbranched structure was synthesized. It exhibited adsorption capacities of 314.8 mg-U/g-Ads in aqueous solution and 4.04 mg-U/g-Ads in simulated seawater over a 28-day period. The ultra-high-molecular-weight polyethylene (UHMWPE) fiber was functionalized by covalently linking hyperbranched polyethyleneimine (h-PEI) to facilitate the migration of uranyl ions within the fibers. Additionally, amidoxime and quaternary ammonium groups were immobilized on the fiber surface to enhance uranium affinity and provide defense against marine organisms. Thi

SUBMITTER: Hu L 

PROVIDER: S-EPMC11644467 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature