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Reference type: Journal
Authors: Koide Y
Article Title: Selective adsorption of metal ions to surface-templated resins prepared by emulsion polymerization using a functional surfactant.
Publication date: 1997
Journal: Abstracts of Papers of the American Chemical Society
Volume: 213
Issue: (IEC)
Page numbers: 100.

Abstract: Monomer-type surfactants which can function as a ligand, 10-(p-vinylphenyl)decanoic acid (Rac) and 2-(p-vinylbenzylamino)alkanoic acid (RnNAc), have been used as emulsifiers for the preparation of surface-templated resins. The surfactants adsorb at the oil-water interface and emulsify divinylbenzene-styrene monomers (DVB-St) (cmc was 3 mN m-1 for R18NAc of the highest emulsion) and the resulting resins were evaluated. The emulsion polymerization using a K2S2O8 initiator (70oC) or by irradiation with -rays gave fine particles which were 2OO-3OO nm in diameter. The metal-imprinted resins prepared with Rac were 1.8 times more effective than the unimprinted resins, and Zn2+-imprinted resins showed highly effective adsorption of Zn2+. Such surface-template effects were also seen for metal-imprinted resins prepared with RnNAc but the effect was sensitive to the alkyl chain length. The R18NAc resin was the most effective. The Cu2+/Zn2+ ratio in competitive sorption was 3.7 for the Cu2+-imprinted resins prepared with Rac and 4.2 by R18NAc. The metal-imprinted resins can be used repeatedly


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