壳聚糖-Sm~(3+)配合物的制备及其生理活性研究

以壳聚糖、氧化钐为原料,制备了壳聚糖-Sm3 配合物,用紫外、红外、差热等分析手段对其配住效果进行了探讨,并对所制备的配合物做了生理活性试验.结果表明,壳聚糖与Sm3 进行了配位反应,红外光谱反映的信息是壳聚糖分子中参与配位的基团主要是羟基.氨基的配位信息不明显,壳聚糖及其配合物的紫外波长、红外波数及其对应的相关温度随着壳聚糖相对分子量的降低而降低,但壳聚糖与Sm3 形成配合物后,配合物的焓变值却增大,稳定性提高,配位效果增强,且所制备配合物具有优良的抗菌、抑菌等某些生理活性.

Preparation of chitosan-Sm~(3+) complex and its physiological activity

Chitosan Sm~(3+) prepared by reaction of chitosan and samarium oxide,was investigated for coordination effect by UV,IR and differential thermal analysis.IR pattern showed that hydroxyl,instead of amido,was the prime coordinating group in chitosan complex.The ultrviolet wavelength,infrared vawenumber of chitosan and its complex as well as their corresponding temperatures were lowered with the decrease of molecular weight of chitosan.The complex has greater enthalpy change than chitosan after coordination,and...