中文摘要：

采用化学氧化法，以苯胺为单体，过硫酸铵为氧化剂，在不同La^3＋浓度下于酸性介质中合成了聚苯胺-镧。研究了La^3＋浓度对产物电导率的影响，并通过红外光谱、紫外可见光谱和x射线衍射谱等研究了La^3＋浓度对聚苯胺结构的影响。结果表明，当溶液中La^3＋浓度为0．3mol／L时，所得聚苯胺一镧具有较高的室温电导率；紫外和红外光谱表明，La^3＋与聚苯胺链上的N原子存在相互作用。

英文摘要：

Polyaniline-La （PANI-La） was synthesized in a solution containing 0. 3 mol/L aniline, 2.0 mol/L HCl, and a certain amount of LaCl3, using peroxydisulphate as an oxidant. The effect of the La^3＋ concentration on the conductivity and structure of PANI-La was studied. It was indicated that when the concentration of La^3＋ was 0. 3 mol/L, the PANI-La had higher conductivity at room temperature. UV and FT-IR spectra showed that there was the interaction between La^3＋ and the PANI chains.