超支化聚(胺-酯)接枝改性纳米TiO_2的研究  

Study on Surface Modification of Nano-TiO_2 Grafted with Hyperbranched Poly(amine-ester)

作　　者：熊磊[1] 马宏毅[2] 王汝敏[1] 梁红波[3] 管静[3] 

机构地区：[1]西北工业大学理学院应用化学系,西安710072 [2]北京航空材料研究院,北京100095 [3]南昌航空大学材料科学与工程学院,南昌330063

出　　处：《材料工程》2010年第3期34-37,共4页Journal of Materials Engineering

基　　金：南昌航空大学科研项目(ZC200801146)

摘　　要：提出了一种对纳米TiO2表面进行化学改性的新方法,即利用硅烷偶联剂KH550进行表面预处理,得到接枝有KH550的纳米TiO2,在此基础上以改性纳米TiO2为中心核,通过与AB2型单体进行缩聚反应,在纳米TiO2的表面原位接枝超支化聚(胺-酯)(HBP)。红外光谱、热失重和透射电镜的测试结果表明纳米TiO2表面接枝上了超支化聚合物,接枝率约为15%。研究结果表明,纳米TiO2经超支化聚(胺-酯)接枝改性后,在乙醇和氯仿中的分散性和稳定性得到提高。A new method to chemical modified the surface of nano-TiO2 was studied.Coupling agent KH550 was grafted onto the surface of nano-TiO2.TiO2-g-poly（amine-ester） nanocomposites were synthesized through one-spot polycondensation between AB2 monomer and TiO2-g-KH550.The results of FTIR,TG and TEM showed that the hyperbranched poly（amine-ester）（HBP） was grafted onto the surface of nano-TiO2 and the weight ratio of the hyperbranched polymer grafted on the surface reached 15%.Results indicated that nano-TiO2 grafted with hyperbranched poly（amine-ester） had better dispersion in the ethanol and chloroform than that of unmodified nano-TiO2.

关 键 词：纳米TIO2 超支化聚(胺-酯) 改性 接枝 

分 类 号：TB332[一般工业技术—材料科学与工程]