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  • 1 Rensselaer Polytechnic Institute 12180 Troy NY USA
  • | 2 Los Alamos National Laboratory Nuclear Materials Technology Division Mail Stop E510 87545 Los Alamos NM USA
  • | 3 Los Alamos National Laboratory Materials Science and Technology Division Mail Stop E549 87545 Los Alamos NM USA
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Abstract  

Open-celled polymeric foam monoliths prepared by high internal phase emulsion polymerization (HIPE) are being investigated as improved materials for separation of heavy metals. In column flow studies, the foam monoliths have high flow rates and are durable up to at least 40 psi. A 4-vinylpyridine functionality has been incorporated into vinylbenzylchloride/styrene copolymer foams by graft-polymerization of vinylpyridine. The open structure of the foam and the flexible graft-polymerized ion-exchange chains result in improved kinetics in metal uptake. Iron uptake kinetics were greatly increased in the grafted foams over resin beads of similar structure. Plutonium uptake kinetics were moderately increased in the foams.