中文摘要：

采用发散式合成法,通过重复以氨基为端基的整代产物与丙烯酸甲酯进行的Mi-chael加成反应和以酯基为端基的半代产物与乙二胺进行的酰胺化反应两个步骤,得到一系列接枝不同代数超支化聚酰胺-胺（PAMAM）分子的改性埃洛石纳米管（HNTs）.利用傅里叶变换红外光谱、X射线光电子能谱、X射线衍射、热重分析和透射电镜对产物进行了表征.结果表明：HNTs表面成功接枝了超支化PAMAM,但由于空间位阻的影响,实际接枝率明显小于理论值,第3.0代超支化PAMAM接枝改性HNTs的接枝率达到27.21%;HNTs表面接枝的超支化大分子没有改变埃洛石纳米管的结晶结构.

英文摘要：

A series of modified halloysite nanotubes（m-HNTs） with different generations of hyper-branched polyamidoamine（PAMAM） were prepared via a divergent synthesis process by repeating the Michael addition of methyl acrylate（MA） to superficial amino groups and the amidation of the resulting esters with ethylenediamine（EDA）.The products were then characterized by means of FT-IR,XPS,XRD,TGA and TEM.The results show that（1） hyper-branched PAMAM polymers are successfully grafted on the surface of HNTs,but the actual grafting rate is much less than the theoretical one due to the existing steric hindrance;（2） the grafting rate reaches 27.21% after a 3.0-generation grafting;and（3） the grafted hyper-branched PAMAM has no effect on the crystalline structure of HNTs.