| 摘要 |
An open celled sponge product for ion absorption is provided comprised of regenerated cellulose wall material and insolubilized polyethyleneimime (PEI) derived from the interaction of PEI with a polyfunctional carboxylic acid. The insolubilized PEI is further caused to contain ionized tertiary amino nitrogen groups which increase the selective absorption capacity of the product for certain anions.
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