摘要
在 10～ 6 0℃范围内 ,测定了聚亚甲基绿的循环伏安图和交流阻抗图 ,测定了循环伏安所用电解质溶液的电导率随温度的变化 .在不同温度下 ,聚亚甲基绿的循环伏安图上均有一阳极峰和一阴极峰 ,阳极峰和阴极峰的峰电流均随温度升高而增加 ,即电极反应速率随温度升高而增加 .交流阻抗的结果表明 ,聚亚甲基绿的电荷传递电阻Rct随温度升高而增大 .热重 (TG)实验表明聚亚甲基绿热失重是分三步进行的 ,聚合物在 2 6 3 .1℃时发生分解 .扫描电镜 (SEM)
The cyclic voltammograms and AC impedance spectra of poly(methylene green) were investigated in the temperature range of 10degreesC to 60degreesC. The effect of temperature on the conductivity of the solution was determined. There are an anodic peak and a cathodic peak in the cyclic voltammogram of poly( methylene green) at various temperatures. Their peak currents increase with increasing temperature, which means that the reaction rate of the electrode increases with increasing temperature. The result from AC impedance plots shows that the charge transfer resistance R., increases with increasing temperature. The TG curve shows that the polymer was decomposed by three steps. The step at 263. 1 degreesC corresponds to the polymer's decomposition. The scanning electron micrograph of the surface of poly(methylene green) polymerized on platinum foil shows that the surface of poly(methylene green) is consisted of some particles.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2002年第1期88-91,共4页
Acta Polymerica Sinica
基金
国家自然科学基金资助项目 (基金号 2 0 0 740 2 7)
中国科学院有机固体开放实验室资助项目
