通过原子转移自由基聚合法(ATRP),应用表面含有活性基团的碳纳米管(MWNT-Br)引发单体甲基丙烯酸-2-(N,N-二乙氨基)乙酯的聚合,得到聚合物包裹的碳纳米管(MWNT-PDEAEMA).透射电子显微镜照片显示产物具有核-壳结构.紫外可见光谱及原子力显微镜分析表明产物具有明显的pH响应性,在pH值约为7的时候溶解性显著降低.由于碳纳米管表面有高密度的聚合物,其与甲基丙烯酸-2-(N,N-二乙氨基)乙酯的均聚物相比更容易聚集,对pH值更加敏感. Polymerization of monomeric 2- (N, N-diethylamino) ethyl methacrylate was initiated by atom transfer radical polymerization (ATRP) using activated carbon nanotubes (MWNT-Br) Polymer-coated carbon nanotubes (MWNT-PDEAEMA). Transmission electron micrographs showed that the product had a core-shell structure. UV-Vis and AFM analysis indicated that the product had a pronounced pH responsiveness and dissolved at a pH of about 7 Due to the high density polymer on the surface of the carbon nanotubes, which is easier to aggregate than the homopolymer of 2- (N, N-diethylamino) ethyl methacrylate and more sensitive to pH .