| 摘要 |
A novel absorbent, for use in the removal of heavy metal cations from water and removal of organic coloring matter from sugar cane juice and antibiotic solutions (e.g. neomycin and gentamycin) has a microporous structure, a surface area of 35-45 m<2>/gm, a physical strength tested on Chatteliar tester of 800-900 gms., and a bulk density of 750-760 gms lit. It is prepared by subjecting cross-linked copolymer beads, e.g. styrene/divinyl benzene copolymer, to in situ chloromethylation in the presence of chloromethyl methylether followed by subjecting the chloromethylated copolymer so obtained to amination with a secondary amine with or without a monoamine. |
