镍离子对聚苯胺性能的影响

EFFECT OF Ni^(2+) ON PROPERTIES OF POLYANILINE

使用过硫酸铵为氧化剂,在含有适量六水合氯化镍的苯胺与盐酸混合液中合成导电聚苯胺(PANI)。研究了镍离子(Ni2+)浓度对PANI电导率和结构的影响。结果表明,当Ni2+浓度为0.3 mol/dm3时,PANI的电导率达到最大值,为5.32 S/cm。傅立叶变换红外光谱表明Ni2+与PANI链之间存在相互作用。透射电子显微镜显示随着Ni2+浓度的提高,PANI粒子逐渐由棒状结构向球形结构转变。

Polyaniline（PANI） was synthesized in the mixed solution of aniline and hydrochloric acid containing adequate NiCl2·6H2O by using peroxydisulphate as the oxidant.The influence of Ni2＋ concentration on the conductivity and structure of PANI was studied.The results indicated that when Ni2＋ concentration was 0.3 mol/dm3,the conductivity of PANI reached the maximum and it was 5.32 S/cm.FTIR spectra showed that there was the interaction between Ni2＋ and PANI chains,and transmission electron microscopy results revealed that PANI tended to form spherical-like structure from nanorods while Ni2＋ concentration increased.