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制备了十二烷基苯磺酸,樟脑磺酸掺杂和这两种有机磺酸共掺杂的3种导电聚苯胺,并研究了聚苯胺的电导率在高温环境中的稳定性。发现氧气的存在是导致聚苯胺电导率剧烈衰减的重要因素,在稀氧环境中能有效抑制聚苯胺电导率的衰减速度。进一步利用X射线衍射分析了聚苯胺的有序化程度,结果表明,十二烷基苯磺酸与樟脑磺酸的共掺杂不利于聚苯胺分子链的有序排列,使其电导的热稳定性最差。与十二烷基苯磺酸不同,极性樟脑磺酸与强极性聚苯胺相容性好,在高温时相分离较不明显,对提高聚苯胺的电导热稳定性是有利的。
Three conductive polyaniline doped with dodecylbenzene sulfonic acid, camphor sulfonic acid and these two kinds of organic sulfonic acids were prepared. The stability of polyaniline conductivity in high temperature environment was also studied. It is found that the presence of oxygen is an important factor leading to the drastic decay of the conductivity of polyaniline, which can effectively inhibit the decay rate of conductivity of polyaniline in dilute oxygen environment. Furthermore, the degree of ordering polyaniline was also analyzed by X-ray diffraction. The results show that co-doping with dodecylbenzenesulfonic acid and camphor sulfonic acid is not conducive to the orderly arrangement of polyaniline molecular chains, The worst sex. Unlike dodecyl benzene sulfonic acid, polar camphorsulfonic acid has good compatibility with strong polar polyaniline, and phase separation is not obvious at high temperature, which is beneficial to improve the thermal conductivity of polyaniline.