中文摘要：

通过对多壁碳纳米管（MWCNTs）表面修饰合成羟基化的MWCNTs,利用羟基化的MWCNTs催化己内酯开环聚合,接着与溴代异丁酰溴反应,合成MWCNTs接枝聚己内酯（PCL）的大分子引发剂,利用该大分子引发剂引发N-异丙基丙烯酰胺单体进行原子转移自由基活性聚合（ATRP）,成功制备了MWCNTs/PCL-b-PNIPAM复合材料。利用FTIR、TGA、XRD、NMR及TEM对产物进行表征。考察了MWCNTs/PCL-b-PNIPAM复合材料的结晶性能及在氯仿中的溶混性。XRD结果表明：MWCNTs/PCL-b-PNIPAM复合材料的结晶峰与PCLb-PNIPAM嵌段共聚物基本一致,并且MWCNTs/PCL-b-PNIPAM复合材料在氯仿溶液中有很好的混溶性。

英文摘要：

The hydroxylated multi-walled carbon tubes （MWCNTs） was synthesized by surface-modification of MWCNTs. The MWCNTs grafted poly （caprolactone） （PCL） based macroinitiator was obtained by the ring opening polymerization of caprolactone which was catalyzed by MWCNTs-OH and further treated with 2-bromoisobutyryl bromide. The MWCNTs/PCL-b-PNIPAM composite was prepared by in situ atom transfer radical polymerization （ATRP）. The products were characterized by FTIR, TGA, XRD, NMR and TEM. The crystallization property and miscibility of MWCNTs/PCL-b-PNIPAM composites in chloroform solvent were observed. The XRD results show that the crystallization peak of MWCNTs/PCL-b-PNIPAM composites is similar to the PCL-b-PNIPAM block copolymer, and MWCNTs/PCL-b-PNIPAM composites have a good miscibility in chloroform solution.