中文摘要：

在室温条件下，以天然高分子材料壳聚糖和稀土纳米氧化物为原料，用表面接枝法制备了两种RE2O3-TDI-壳聚糖（TDI=甲苯-2,4-二异氰酸酯，RE=镧，钕）杂化复合物，借助红外（IR）、热重（DSC-TG）、扫描电镜（SEM）等测试技术对所制备的壳聚糖杂化材料的物化性能进行了表征，并采用培养基扩散法和营养肉汤稀释法等抑菌实验方法对其进行了抑菌活性实验，结果表明该稀土纳米壳聚糖杂化材料具有很好的热稳定性及抑菌性能。

英文摘要：

The two hybrid materials of RE203TDI CTS （TDI = Toluene2,4diisoeyanate, RE = La, Nd） were prepared by surface grafting. The TDI was grafted on nanorare earth oxides and chitosan with natural oxides tosan h polymer material chitosan and nanorare earth at room temperature, to obtain rare earth chi ybrid. The hybrid materials were characterizedby IR, TG and SEM, which confirmed that the chitosan was grafted on the surface of rareearth nanooxide of TDI. Its biological antibacterial activity experi ments were studied based on the medium diffusion and nutrient broth dilution. The experiments＇ results indi cated that the rare earth nanooxides chitosan hybrid materials have good thermal stability and antibacterial properties.