Analytical Sciences

Condensed-Phosphate Imprinted Resins Prepared by a SurfaceTemplate Polymerization Method

Isamu FUJIWARA,* Mizuo MAEDA,** and Makoto TAKAGI***

*Center for Waste Water Treatment, Yamaguchi University, Yoshida, Yamaguchi 753-8511, Japan
**Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University,Hakozaki, Fukuoka 812-8581,Japan
***Department of Chemical Systems Engineering, Graduate School of Engineering, Kyushu University,Hakozaki, Fukuoka 812-8581,Japan

Condensed-phosphate templated resins were prepared by a surface template polymerization method using oleylamine as afunctional surfactant, oleyl alcohol as a co-surfactant, divinylbenzene as a matrix-forming monomer, andtripolyphosphate, pyrophosphate, and phosphate as templates. When tripolyphosphate-templated resins were prepared byusing oleylamine alone as surfactant, a template effect was not observed. However, we successfully templatedtripolyphosphate by using, along with oleylamine and oleyl alcohol or polyethylene glycol monooleyl ether (PGME) as aco-surfactant. The thus-prepared templated resin adsorbed the template molecule more effectively than did a non-templatedresin. A resin prepared using oleyl alcohol as a co-surfactant showed a higher adsorptivity than that preparedby using PGME (n = 2, 10). The amount of oleyl alcohol to be used in resin preparation was studied, and a double molaramount of oleylamine was found optimal. We also investigated the adsorption of other anions, such as phosphate,pyrophosphate, and ferrocyanide, on the tripolyphosphate-templated resin. Pyrophosphate and ferrocyanide ions wereadsorbed more effectively on the templated resin than on the non-templated. Conversely, tripolyphosphate showed lessadsorptivity on the phosphate- and pyrophosphate-templated resins than on the non-templated resin.

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