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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis,Characterization,and Adsorption Properties of Chitosan Azacrown Ethers Bearing Hydroxyl Group
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Synthesis,Characterization,and Adsorption Properties of Chitosan Azacrown Ethers Bearing Hydroxyl Group

机译：带有羟基的壳聚糖氮杂冠醚的合成，表征及吸附性能

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摘要

Two new chitosan azacrownethers bearing hydroxyl groups (CTS-DH and CTS-DO) were synthesized by the reaction of 3-hydroxyl-1,5-diaza-cycloheptane and , 3-hydroxyl-1,5-diaza-cyclooctane with epoxy-activated chitosan. Their structures were characterized by elemental analysis, infrared spectra analysis, and X-ray diffraction analysis. The adsorption and selectivity properties of the hydroxyl azacrown ethers chitosan derivatives for Ag+, Cr~(3+, Cd~(2+), and Pb~(2+) were also investigated. The exper- ;1 imental results showed that the two novel chitosan azacrown ethers have good adsorp-(1 tion capacity for Ag'+ , and also showed that the grafted chitosan azacrown ethers have . high selectivity for the adsorption of Ag+ in the presence of Pb2+ and Cd~(2+). The selectivity coefficients of CTS-DH and CTS-DO were K_(Ag + /Pb~(2+)) = 21,K_(Ag~+ /Cd~(2+) = 42,K_(Ag~+/Pb~(2+) = 20.5,K_(Ag~+/Cd~(2+) = 41,respectively.
机译：通过3-羟基-1,5-二氮杂-环庚烷和3-羟基-1,5-二氮杂-环辛烷的环氧活化反应，合成了两种带有羟基的壳聚糖氮杂冠醚（CTS-DH和CTS-DO）。壳聚糖。通过元素分析，红外光谱分析和X射线衍射分析对它们的结构进行了表征。实验研究了羟基氮杂皇冠醚壳聚糖衍生物对Ag +，Cr〜（3 +，Cd〜（2+）和Pb〜（2+）的吸附和选择性，实验结果表明：二者新型的壳聚糖氮杂皇冠醚对Ag'+具有良好的吸附能力，并且表明接枝的壳聚糖氮杂皇冠醚在Pb2 +和Cd〜（2+）存在下对Ag +的吸附选择性高。 CTS-DH和CTS-DO的系数为K_（Ag + / Pb〜（2+））= 21，K_（Ag〜+ / Cd〜（2+）= 42，K_（Ag〜+ / Pb〜（2 +）= 20.5，K_（Ag〜+ / Cd〜（2+）= 41。

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