PS/Ag纳米复合粒子的制备与表征

Preparation and Characterization of PS/Ag composite nanoparticles

目的制备PS/Ag纳米复合粒子。方法以二硫代苯甲酸异丙苯酯(CDB)为链转移剂,用可逆加成断裂链转移聚合(RAFT)的方法将硫代羰基引入到聚苯乙烯(PS)高分子链中,采用透射电子显微镜(TEM)对其进行了表征。利用PS高分子链中的硫代羰基有保护和稳定Ag纳米粒子的作用,制备了PS/Ag纳米复合粒子。结果Ag纳米粒子具有良好的单晶结构,且均匀分散于PS胶体粒子中。结论PS/Ag纳米复合粒子的结构与AgNO3溶液的加入量有关。

Aim Preparation of PS/Ag nanoparticles composite. Methods Polystyrene （PS） homopolymer which were introduced the thiocarbonyl had been synthesized by reversible addition-fragmentation chain transfer polymerization （RAFT）, using cumyl dithiobenzoate （CDB） as the chain transfer agent. As the protection and stabilization effect of the thioearbonyl for Ag nanoparticles, the PS/Ag composites nanoparticles were formed. Results The formation of PS/Ag composite nanoparticles was confirmed by the transmission electronmicroscopy （TEM）. The results indicated that the Ag nanoparticles were dispersed in the colloid of PS polymer and had the formation of single crystal. Conclusion PS/Ag nanopartieles composite structure relate to the amount of AgNO3 solution.