以天然石墨为起始原料,采用改进的Hummer方法,通过强酸氧化水解和超声分散制备了氧化石墨烯,然后通过肼还原和重氮化反应得到含有羟基的石墨烯(G-OH),再通过酯化反应在石墨烯表面上引入了α-氯代羰基,从而得到了含有单电子转移活性自由基聚合(SET-LRP)引发基团的石墨烯(G-Cl).最后,在石墨烯表面原位引发N,N-二甲基丙烯酰胺(DMAA)单体的SET-LRP聚合,得到了G-PDMAA复合材料,G-PDMAA在常规的有机溶剂和水中具有良好的分散性. Using natural graphite as the starting material, graphene oxide was prepared by oxidative hydrolysis and ultrasonic dispersion using a modified Hummer method. Then, graphene (G-OH) containing hydroxyl groups was obtained by hydrazine reduction and diazotization reaction, Esterification introduced α-chlorocarbonyl onto the surface of graphene to obtain graphene (G-Cl) containing single electron transfer radical polymerization (SET-LRP) initiating groups.Finally, graphene In situ polymerization initiated by SET-LRP of N, N-dimethylacrylamide (DMAA) monomer gave G-PDMAA composites. G-PDMAA has good dispersibility in common organic solvents and water.