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...http://www.google.es/patents/US5864025?utm_source=gb-gplus-sharePatente US5864025 - Method of making magnetic, crosslinked chitosan support materials and products thereof
Method of making magnetic, crosslinked chitosan support materials and ...