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Preparation and Characterization of magnetic resin Made from Chitosan and Cerium

Journal of Ocean University of China 2010年第2期9卷 185-192页

作者： YU Lina WANG Dongfeng LI Haiyan LIU Bingjie WANG Xingyu XU Ying College of Food Science and Engineering Ocean University of China Qingdao 266003 P. R. China Shandong Peanut Research Institute Qingdao 266100 P R. China

In this study, the water-based ferromagnetic fluid and magnetic resin made from chitosan and cerium complex （MRCCC） were successfully prepared by using the chemical co-precipitation technique and by the reversed-phase suspension cross-linking polymerization. MRCCC presented uniform and narrow panicle size distribution as determined by the Laser Panicles Sizer. The Inductively Coupled Plasma-Atomic Emission Spectrometry （ICP-AES）, Fourier transform infrared spectroscopy （FT-IR）, differential scanning calorimetry （DSC） and X-ray powder diffraction （XRD） study demonstrated that there were iron and cerium existing in MRCCC. The movement of MRCCC under magnetic field proved its magnetic property. The swelling kinetics in water or solutions with different pH indicated that MRCCC could be applied in solutions with pH greater than 1.0. The ferromagnetic fluid particles were stable in MRCCC soaked in solutions with pH 〉2.0. In view of these results, MRCCC can be used as material for separation, clarification, adsorption, sustained release and hydrolysis activity.

关键词： magnetic resin chitosan cerium preparation characterization properties

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Preparation of magnetic anion exchange resin and their adsorption kinetic behavior of reactive blue

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Chinese Chemical Letters 2011年第9期22卷 1091-1094页

作者： Chen Dong Shuang Feng Yang Fei Pan Qing Zhou Wei Ben Yang Ai Min Li State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210093 China

magnetic anion exchange resin （MD-1） was prepared from quaternization of magnetic copolymeric resin （glycidyl methacry- late-co-divinylbenzene）. For comparison, magnetic resin MD-0 without quaternization and non-magnetic resin （D-l） were also synthesized for the adsorption process. It was found that the adsorption was mainly contributed to the chemical interaction between quaternary ammonium groups and reactive blue RXHC. Due to the smaller size, MD- 1 had faster adsorption and desorption kinetics than D-1. Coupled with the advantage of easy separation, the magnetic anion exchange resin was considered to be superior to common anion exchange resin in removal of reactive dye.

关键词： magnetic resin Glycidyl methacrylate Reactive blue RXHC Anion exchange Adsorption kinetics

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