키토산에 대한 Itaconic acid의 graft 공중합과 그 특성 = A Study on the Graft-copolymerization of Itaconic acid onto chitosan and its characterization

다국어 초록 (Multilingual Abstract)

Chitosan was prepared from chitin which was abstracted from wasted crab shell. Then itaconic acid was graft-copolymerized onto chitosan using ceric ammonium nitrate(CAN) 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 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 the graft-copolymer was identified through IR spectra checking.
The optimal grafting conditions and flocculation results were shown to be:
concentration of ceric ammonium nitrate is ??, reaction temperature is 40℃ and reaction time is 4hrs with 0.25M of the monomer(itaconic acid).
Through flocculation tests using chitosan, grafted chitosan(CsIa) and cation, CODcr, metal ions removal rates were measured. The order of superiority is CsIa＞Cs＞Cation.