摘要
利用接枝的方法制备了4种纳米RE2O3/硫酸酯化壳聚糖杂化材料(Nd2O3-TDI-CS,Eu2O3-TDI-CS,La2O3-TDI-CS,Sc2O3-TDI-CS,TDI=甲苯二异氰酸酯,CS=壳聚糖),用红外光谱、热重分析和扫描电镜表征了产物,结果表明壳聚糖接枝于经过活化后的纳米氧化物表面.抗凝血实验结果和复钙实验结果说明制备的4种杂化材料比纳米稀土氧化物具有更好的抗凝血性能.
Four hybrid materials of RE2O3-TDI-CS（TDI=toluene 2,4-diisocyanate,CS=chitosan,RE= Nd,Eu,La,Sc） were prepared by the method of graft.The materials were characterized by infrared spec-troscopy,thermogravimetric and scanning electron microscopy,and results showed that the CS was grafted on the surface of rare earth nano-oxides which was modified by TDI.The results of the experiment of anti-coagulant and recalcification time showed that the materials have better anticoagulant action than that of RE2O3.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2012年第2期207-211,共5页
Acta Chimica Sinica
基金
国家自然科学基金(No.21062017)
甘肃省自然科学基金(No.1112RJZA006)
甘肃省高分子材料重点实验室和兰州理工大学博士科研启动资助项目~~
关键词
壳聚糖
纳米稀土氧化物
杂化材料
抗凝血
复钙
chitosan（CS）
rare earth nano-oxide
hybrid material
anticoagulant
recalcification
