固相法合成苯胺与邻甲氧基苯胺共聚物及其性能

Solid-state Synthesis and Properties of Copolymers of Aniline and o-Methoxyaniline

以苯胺和邻甲氧基苯胺为单体,甲磺酸为掺杂酸,用固相法合成了甲磺酸掺杂苯胺与邻甲氧基苯胺共聚物。通过红外光谱、紫外可见吸收光谱、X射线衍射、透射电子显微镜、循环伏安和电导率等对共聚物进行了结构表征和性能测试。结果表明,不同摩尔比的苯胺与邻甲氧基苯胺共聚物处于中间氧化态,随邻甲氧基苯胺含量的增大,共聚物的掺杂率降低。共聚物具有较高的结晶性和纤维状形貌,当苯胺与邻甲氧基苯胺摩尔比为1∶1时,具有较高的电化学活性,其导电率为1.65 S/cm。

Copolymers of aniline and o-methoxyaniline were synthesized by solid-state polymerization method using methanesulphonic acid as the doping acid. The resultant copolymers were characterized by FTIR, UV-Vis, TEM, X-ray diffraction, cyclic vohammetry and conductivity measurements. The results showed that the copolymers prepared under different aniline and o-methoxyaniline molar ratios displayed an emeraldine salt phase, and the doping degree of copolymers decreased with increasing content of o-methoxyaniline in monomers. The as-prepared copolymers had a high crystallinity and displayed a fibrillar morphology. The copolymer prepared under the molar ratio of 1 ： 1, exhibited a higher electrochemical activity than the others, and its conductivity was 1.65 S/cm.