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通过可逆加成断裂链转移聚合(RAFT)成功制备了聚苯乙烯-聚4-乙烯基吡啶(PS-b-P4VP)双亲性嵌段共聚物。利用核磁共振氢谱(1 H NMR)对产物的结构进行了表征。然后研究了聚合物在选择性溶剂中的自组装行为,测试表明该聚合物在一定条件下可自组装形成囊泡状,以此结构作为原位反应器成功包覆纳米银制备了亚微米级的纳米复合材料,应用紫外-可见吸收光谱(UV-Vis)、X射线衍射(XRD)、扫描电镜(SEM)和X射线能谱仪(EDS)等测试手段对复合结果进行了表征。
Polystyrene-poly-4-vinylpyridine (PS-b-P4VP) amphiphilic block copolymer was successfully prepared by reversible addition-fragmentation chain transfer polymerization (RAFT). The structure of the product was characterized by 1H nuclear magnetic resonance (1 H NMR). Then, the self-assembly behavior of the polymer in selective solvent was studied. The results showed that the polymer could self-assemble into vesicles under certain conditions. The structure was successfully coated with nano-silver as an in-situ reactor to prepare submicron The composite materials were characterized by UV-Vis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS)