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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of dihydroxyl mesocyclic diamine derivative of chitosan
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Preparation and characterization of dihydroxyl mesocyclic diamine derivative of chitosan

机译：壳聚糖二羟基中环二胺衍生物的制备与表征

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The synthesis of a new dihydroxyl mesocyclic diamine grafting chitosan is presented. This derivative is formed by reaction of dihydroxyl azacrown ether with expoxy-activated chitosan. The obtained copolymer contains amino functional groups in its skeleton and the secondary amine, and more polar hydroxyl groups. Elemental analysis, fourier transform infrared analysis, as well as solid-state carbon-13 nuclear magnetic resonance analysis were used to characterize chemical modifications of the chitosan. The adsorption properties of the dihydroxyl mesocyclic diamine grafted chitosan for Ag+, Pb2+, Cd2+, and Cr3+ were studied. The experimented results showed that the novel chitosan derivative has good adsorption capacity and high selectivity for Ag+ in the presence of Pb2+, Cd2+, and Cr2+, and its adsorption selectivity is better than that of chitosan. The selectivity coefficients were KAg+/Pb2+_ = 12.25, KAg+/cr3+ = 6.12, and KPb2+/cr3+ = 0.52, respectively. (C) 2002 Wiley Periodicals, Inc. [References: 17]
机译：提出了一种新的二羟基介环二胺接枝壳聚糖的合成方法。该衍生物是通过二羟基氮杂皇冠酮与环氧活化的壳聚糖反应形成的。所获得的共聚物在其骨架和仲胺中包含氨基官能团，以及更多极性的羟基。元素分析，傅立叶变换红外分析以及固态碳13核磁共振分析用于表征壳聚糖的化学修饰。研究了二羟基中环二胺接枝壳聚糖对Ag +，Pb2 +，Cd2 +和Cr3 +的吸附性能。实验结果表明，该新型壳聚糖衍生物在Pb2 +，Cd2 +和Cr2 +存在下对Ag +具有良好的吸附能力和选择性，其吸附选择性优于壳聚糖。选择性系数分别为KAg + / Pb2 + _ = 12.25，KAg + / cr3 + = 6.12和KPb2 + / cr3 + = 0.52。 （C）2002 Wiley Periodicals，Inc. [参考：17]

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