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KMID : 0525719990040030125
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Journal of Chitin and Chitosan
1999 Volume.4 No. 3 p.125 ~ p.131
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Preparation of Poly ( Itaconic acid ) Grafted - Chitosan Copolymer and Its COD and Heavy Metal Removal Abilities
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윤충수/Yun CS
한상문/김용범/Han SM/Kim YB
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Abstract
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Chitosan was prepared from chitin which was abstracted from wasted crab shells. Then itaconic acid was graft-copolymerized onto chitosan using ceric ammonium nitrate as a reaction initiator. To investigate the optimal grafting conditions, the influences of several factors on the grafting were studied i.e. the concentrations of Ceric Ammonium Nitrate(CAN) and itaconic acid, the reaction temperature and time. And to find out its flocculation ability, the flocculation test was carried out with a metal plating factory waste water. The state of graft-copolymer was identified through IR spectra analysis. The optimal grafting conditions and flocculation results were shown to be : concentration of ceric ammonium nitrate is 3.5×10-3M, reaction temperature is 40℃ and reaction time is 4 hrs with 0.25 M of the monomer(itaconic acid). Though flocculation tests using chitosan, grafted chitosan and cation, CODcr, metal ions removal rates were measured. The order of superiority is Itaconic acid grafted chitosan>Chitosan>Cationic polymer.
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