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Poly ( Itaconic acid ) grafted - chitosan copolymer 의 제조와 응집에 의한 COD 및 중금속의 제거 능력
윤충수(Choong Soo Yun),한상문(Sang Mun Han),김용범(Yong Beom Kim) 한국키틴키토산학회 1999 한국키틴키토산학회지 Vol.4 No.3
N/A 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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게 껍질 폐기물로부터 추훌한 Chitosan에 Itaconic acid의 그라프트 공중합과 오염물질의 제거 능력
한상문(Sang-Mun Han),윤충수(Choong-Soo Yun),김용범(Yong-Beom Kim) 유기성자원학회 1999 유기물자원화 Vol.7 No.2
수산물 가공 공장에서 배출되논 게 껍질 폐기물로부터 Chitin을 추출하고 탈아세틸화하여 Chitosan(Cs)을 제조하였다. 이 Cs를 초산 용액중에서 용해한 후 Itaconic acid를 첨가하고 CeIic ammonium nitrate(CAN)를 반응 개시제로 사용하여 Graft-copolymelization 하였다 본 연구에서는 Cs에 첨 7념F는 Itaconic acid와 CAN의 농도, 반응온도, 반응시간의 영향에 따른 최적 중합조건을 도출하고 이 Grafted-copolymel의 폐수중의 CODcr 유발물과 구리 이온의 제거 능력을 연구하였다. 여기서 CODcr과 구리이온의 제거능력 시험에 사용힌 폐수는 도금 공장 폐수를 사용하였고. Graft-copolymerization으로 합성된 이 중합체의 동정에는 적외선 스펙트로메타플 사용하였다. 이상의 실험 결과. Graft 율은 Cs에 Monomer로써 Itaconic acid 릅 0.25M농도로 첨가하였윤 때. CAN은 3.5x 10-\1. 반응 온도는 40.C 그리고 반응시간은 4시간일때 가장 높았다. 또한. Cs과 Itaconic acid grafted chitosan(Csla). Cationic polymer를 사용하여 폐수중 유기불과 금속이온의 제거 실험을 한 결과 상등액의 CODcr과 구리 이온 제거율은 Cs와 Cationic polymer 보다 CsIa가 보다 효과적이었다. 이것은 합성한 Csla가 양쪽성 고분자이기 때문이다. Chîtosan 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 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 3.5x lQ-1vi. reaction temperature is 40'c and reaction time is 4hrs with O.25M 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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키토산에 대한 Itaconic acid의 graft 공중합과 그 특성
한상문,윤충수,김용범 서울산업대학교 산업대학원 1999 大學院論文集 Vol.6 No.-
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.
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