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以硫酸铁为氧化剂 ,用化学法合成了聚苯胺。在不同浓度的硫酸溶液中 ,苯胺的现场可见光谱表明 ,72 0nm处的吸收峰首先形成 ,它的吸收度随反应时间而增加 ;然后 52 0nm的吸收峰慢慢形成。 72 0nm的聚苯胺在水溶液中具有低的溶解度 ,它的溶解度与苯胺聚合时所用酸的浓度有关。然而 ,52 0nm的聚苯胺能完全溶于水中。具有深色的聚苯胺溶液造成环境的污染。聚苯胺的红外光谱和循环伏安图受使用在苯胺电化学聚合中的硫酸浓度的影响。“绿色”合成聚苯胺的最佳条件是溶液的组成为 0 2mol·dm-3 苯胺、0 1mol·dm-3 硫酸铁和 0 2mol·dm-3 硫酸 ,以及温度控制在 1 5℃以下
With ferric sulfate as oxidant, polyaniline was chemically synthesized. In different concentrations of sulfuric acid solution, aniline in the field visible spectrum shows that the absorption peak at 72 0nm first formed, its absorption increases with the reaction time; and then gradually absorb the peak at 52 0nm. Polyaniline at 72 nm has a low solubility in aqueous solution and its solubility is related to the concentration of acid used in the aniline polymerization. However, polyaniline at 52 0 nm is completely soluble in water. A dark polyaniline solution causes environmental pollution. Infrared spectra and cyclic voltammograms of polyaniline are affected by the concentration of sulfuric acid used in the electrochemical polymerization of aniline. The optimum condition for the synthesis of “green” polyaniline is that the composition of the solution is 0 2mol · dm-3 aniline, 0 1mol · dm-3 ferric sulfate and 0 2mol · dm-3 sulfuric acid, and the temperature is controlled below 15 ℃