分析化学
Print ISSN : 0525-1931
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クラウンエーテル誘導体を担持した90Sr分析用吸着繊維の作製
堀田 拓摩浅井 志保今田 未来半澤 有希子斎藤 恭一藤原 邦夫須郷 高信北辻 章浩
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2017 年 66 巻 3 号 p. 189-193

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A Sr adsorption fiber was prepared for rapid analysis of 90Sr content in the fiber using radiation-induced emulsion graft polymerization and subsequent chemical modification. A polyethylene fiber with a diameter of 13 μm was first immersed in a methanol solution of an epoxy-group-containing vinyl monomer, glycidyl methacrylate (GMA), and polyoxyethylene sorbitol ester (Tween20) as a surfactant for the graft-polymerization of GMA. Octadecylamine was then bound to a polymer chain extending from the fiber surface, providing hydrophobicity to the polymer chain. Dicyclohexano-18-crown-6 (DCH18C6) was finaly impregnated onto the polymer chain via a hydrophobic interaction between the octadecyl moiety of the polymer chain and the cyclohexyl moiety of DCH18C6. The fiber surface structure, characterized by DCH18C6 molecules loosely entangled with polymer chains, allowed for the rapid adsorption of Sr ions at an adsorption rate of approximately 100-times higher than that of a commercially available Sr-selective resin (Sr Resin®).

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© The Japan Society for Analytical Chemistry 2017
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