采用传统化学氧化聚合法制备聚苯胺/银纳米复合材料,主要研究了银离子对聚苯胺形貌、微结构及导电性能的影响规律。SEM和XRD测试结果表明,钺离子浓度对聚苯胺微观形貌及结晶度有显著的影响。随着银离子浓度增加,聚苯胺由微球向纤维束转变,其结晶度有所增加。UV-Vis和FT-IR分析结果表明,随着银离子浓度的增加,聚苯胺分子链中氧化单元数与还原单元数的比例增加。电导率测试结果表明,当聚苯胺与银离予浓度的摩尔比为10时,聚苯胺/银纳米复合材料的电导率达到最大值1.62 S·cm^-1,是纯聚苯胺的18倍。
Approach to control polyaniline(PANI) morphologies through doping Ag ions during the conventional chemical oxidative polymerization was reported, and the effects of silver ions on morphologies and properties of PANI was investigated. SEM and XRD analysis results indicate that the morphologies of PANI change from micro-spheres to fibrillar bundles with increasing silver nitride concentration, UV-Vis absorption spectroscopy and FT-IR analysis prove that the balance of oxidized and reduced units of PANI becomes large with increasing silver nitride concentration. The conductivity test prove that the conductivity increases with increasing silver nitride concentration up to 10 (molar ratio of PANI to silver ion), the conductivity of PANUAg is 1.62 S·cm^-1, which is about 18 times higher than that of pure PANI.