Method of making magnetic, crosslinked chitosan support materials and products thereof

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1999-01-26
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United States Patent and Trademark Office
Abstract

Method for magnetizing crosslinked chitosan support material involving the treatment of carboxyl group-containing, crosslinked chitosan gels with solutions of ferrous chloride followed by treatment with dilute aqueous alkali and then oxidation with molecular oxygen gas to produce highly-enriched magnetized chitosan particles, beads, films and/or coatings.

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