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KMID : 1059519850290030233
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Journal of the Korean Chemical Society
1985 Volume.29 No. 3 p.233 ~ p.238
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The Properties of Porous and Non Porous Aminated Polystyrene Divinylbenzene Anion Exchange
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Kim Dong-Won
Oh Je-Jik
Min Tae-Won
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Abstract
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The non-porous and porous polystyrene divinylbenzene copolymers were prepared by the suspension polymerization method. The non-porous aminated polystyrene divinylbenzene, N-APSTDVB and the porous aminated polystyrene divinylbenzene, P-APSTDVB of 50∼100mesh size weakly basic anion exchanger were synthesized by chloromethylation followed by amination with methylamine. The functional groups of these synthesized anion exchangers were confirmed by their infrared spectra. The maximum capacity of these exchangers was 4.86meq/g. Pore volume and pore spectra were determined with a mercury porosimeter. The pore volume of P-PSTDVB increased with increasing Xdiluent at 30% of divinylbenzene. However, the pore volume of P-PSTDVB increased with increasing volume percent of divinylbenzene at constant mole fraction of diluent, Xdiluent of 0.5. The pore volume of synthesized copolymer and anion exchanger at 8% divinylbenzene and 0.5Xheptane decreased as follows; P-PSTDVB 〉P-APSTDVB 〉N-PSTDVB. This result was attributed to the possibility that the pore volume were reduced by amination reactions. The distribution coefficients of boric acid on the N-APSTDVB anion exchanger in various concentrations of alcohol water solutions showed that as alcohol concentration increased, the distribution coefficients values decreased due to the reduced concentration of H2BO3-.
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