壳聚糖-Zr(Ⅳ)配合物的制备及催化氧化降解的研究  

Preparation of Complexes of Chitosan with Zr(Ⅳ) and Catalysis Oxidizing Degradation

作　　者：丁纯梅[1] 王芬华[1] 李芳[1] 苏云[1] 张德海[1] 沙乐[1] 

机构地区：[1]安徽工程科技学院生化系,安徽芜湖241000

出　　处：《稀有金属》2007年第2期232-236,共5页Chinese Journal of Rare Metals

基　　金：安徽省教育厅自然科学基金重点项目(2003kj008zd)

摘　　要：对壳聚糖进行液态均相配合反应制得壳聚糖-Zr(Ⅳ)配合物,通过AMF,IR,XRD及XPS等检测证实了壳聚糖与锆离子之间配位键的存在,且显示壳聚糖在形成配位结构后存在有利于降解的优势构象。以H2O2对壳聚糖-Zr(Ⅳ)配合物及壳聚糖进行氧化降解,探讨相同条件下粘度的变化及降解产物的分子量分布。结果表明,壳聚糖-Zr(Ⅳ)配合物的降解速度明显高于壳聚糖,降解产物分子量分布较壳聚糖直接降解窄,进一步证明壳聚糖-Zr(Ⅳ)配合物中存在有利于降解的优势结构。Coordination compound of chitosan （CTS） with zirconium was prepared by the liquid homogeneity reaction. It was characterized by atom force microscope （AFM）, infrared spectrum （IR）, X-ray diffraction spectrum （XRD） and X-ray photoelectron spectrum （XPS）, which confirm the formation of coordination bonds between chitosan and zirconium ions. Hydrogen peroxide was used to degrade CTS-Zr （Ⅳ） and CTS to examine the viscosity variety and molecular weight distribution of degraded products under the same condition. The results showed that the degradation speed of CTS-Zr（ Ⅳ ） was much faster than that of CTS, and the molecular weight distribution of degrad- ed products was much more narrow, which suggest that the structure of the complexes was favorable to degradation.

关 键 词：壳聚糖 壳聚糖锆配合物 催化氧化 

分 类 号：O636.1[理学—高分子化学]