【摘要】 用元素分析、ＦＴ－ＩＲ、ＸＰＳ、ＷＡＸＤ、ＤＴＡ等研究了聚苯胺经碘掺杂前后的结构变化及其对性能的影响。结果表明，掺杂剂碘从聚苯胺分子链中的醌亚胺结构单元的氮原子上取得电子，形成了电荷转移复合物，碘掺杂后聚苯胺的电导率可提高到２．６４×１０－２Ｓ／ｃｍ。复合物中的碘主要以Ｉ－３和Ｉ－５离子的形式存在，而且Ｉ－５离子的相对含量随掺碘量的增加而增大。碘掺杂的聚苯胺呈无定形态，不易吸水受潮，但热稳定性较差。更多还原

【Abstract】 ffect of the structural change resulted from iodine doping on the properties of polyaniline was studied by elemental analysis, FTIR, XPS, WAXD and DTA. It was shown that the dopant iodine accepted electrons from the nitrogen atoms in the quinonediimine units in polyaniline molecular chains and a chargetransfered complex was formed. The conductivity of iodinedoped polyaniline can be attained to 2.64×10-2 S/cm. The iodine in the complex existes mainly in the forms of I-3 and I-5 anions and the relative content of I-5 anions increases with increasing the iodine content. Iodinedoped polyaniline is amorphous and not easy to absorb moisture, thermal stability is decreased.更多还原