Immobilization of functional materials onto poly(styrene--divinylbenzene) gels by irradiation and adsorption properties

Mishima, Satoko*; Asano, Masaharu; Yoshida, Masaru

Pectin and triallylisocyanurate (TAIC) were immobilized onto poly(styrene--divinylbenzene) (PSD) beads by irradiating in the range of 2.5 to 25 kGy using -rays from a Co source. The adsorption performance of methyl-2-benzimidazolylcarbamate (MBC) treated with immobilized Pectin- TAIC beads was investigated. Pectin was effective to enhance the MBC uptakes at pH11, in contrast to pH3 for TAIC. The amounts of MBC uptake of immobilized Pectin-TAIC beads were 1.33.9 times higher than those of PSD beads which were only irradiated without the use of Pectin and TAIC in the range of pH3 to pH11. The cycles of absorption-desorption assays show that the sorption performance of immobilized Pectin-TAIC beads shows excellent reproducibility, suggesting that the immobilized Pectin-TAIC beads are a useful adsorbent for the extraction of MBC from environmental water.