The feather grafted copolymer containing poly (dimethylaminoethyl methacrylate) (Feather-g-PDMAEMA) was synthesized via electron transfer atom transfer radical polymerization (ARGET ATRP) , taking the carbonyl bromide groups on the feather surface as initiator and 2- (dimethylamino) ethyl methacrylate (DMAEMA) as grafting monomer. Subsequently, the DMAEMA grafted feather was quaternized by modification reagent bromoethane, and the feather grafted polymer with antibacterial properties was acquired. Furthermore, EDS, FT-IR, TGA, XRD and SEM were employed to characterize the element content, chemical structure, thermal stability, crystalline structure and surface morphology of the modified feather. The results of FT-IR and SEM analysis verified that 2- (dimethylamino) ethyl methacrylate was successfully grafted onto the surface of feather and the grafting rate of Feather-g-PDMAEMA could be as high as 84. 7％. The results of XRD indicated that the crystallinity of feathers declined after grafting polymerization. It could be found from the results of TGA analysis, there was a certain decrease in the thermal stability of Feather-g-PDMAEMA. As revealed by antibacterial test, quaternized Feather-g-PDMAEMA possessed favorable antibacterial effect.%采用电子转移活化再生催化剂原子转移自由基聚合 (ARGET ATRP) 的方法, 以羽毛表面的溴为引发位点, 引发甲基丙烯酸二甲氨基乙酯 (DMAEMA) 在羽毛表面自增长, 制备含聚甲基丙烯酸二甲氨基乙酯刷的羽毛接枝共聚物 (Feather-g-PDMAEMA) .再以溴乙烷为改性试剂, 对其进行季铵化处理, 制备具有抗菌性能的羽毛接枝共聚物.改性后羽毛的元素含量、官能团、热稳定性、结晶结构、表面形貌分别通过能谱仪 (EDS) 、傅里叶变换红外光谱仪 (FT-IR) 、热重分析仪 (TGA) 、X射线衍射仪 (XRD) 、扫描电子显微镜 (SEM) 进行表征.FT-IR和SEM分析结果表明, 甲基丙烯酸二甲氨基乙酯成功地接枝到羽毛的表面, 所得羽毛接枝共聚物的接枝率最高可达84. 7％; XRD的分析结果显示, 接枝聚合后的羽毛的结晶度降低; TGA分析结果显示, 接枝聚合后的羽毛热稳定性降低;抗菌测试结果表明, 季铵化处理后的Feather-g-PDMAEMA具有良好的抗菌效果.
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