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采用液相化学还原法合成了Ag/壳聚糖(CS)复合胶乳,并制备了Ag/CS-g-甲基丙烯酸甲酯(MMA)复合物。研究结果表明,纳米Ag粒子对CS与MMA的接枝聚合起阻碍作用,导致接枝率和接枝效率比无Ag粒子存在时有所下降。结构表征显示纳米Ag粒子均匀分散于复合物中。抗菌评价结果表明:Ag/CS和Ag/CS-g-MMA复合抗菌剂具有比Ag或CS单一抗菌剂更高效的抗菌性能,Ag/CS-g-MMA复合物对E.coli、B.subtilis、S.aureus和P.aeruginosa四种菌的抑菌率分别为96.3%、97.6%、93.2%、95.8%;Ag/CS-g-MMA复合抗菌剂的抗菌性能是纳米Ag粒子与CS协同作用的结果。
Ag / CS-g-methyl methacrylate (MMA) composites were synthesized by liquid chemical reduction method. The results show that the nano-Ag particles hinder the graft polymerization of CS and MMA, resulting in the grafting rate and grafting efficiency than the absence of Ag particles decreased. The structural characterization shows that the nano-Ag particles are uniformly dispersed in the composite. The results of antibacterial evaluation showed that Ag / CS and Ag / CS-g-MMA composite antibacterial agents had higher antibacterial activity than Ag or CS single antibacterial agent. Ag / CS-g-MMA complex had no antibacterial activity against E.coli, B. subtilis , S.aureus and P.aeruginosa were 96.3%, 97.6%, 93.2% and 95.8%, respectively. The antibacterial activity of Ag / CS-g-MMA composite antibacterial agent was synergistic with nano-Ag particles the result of.