-
摘要: 通过对聚苯乙炔(PPA)进行溴蒸气掺杂,使其电导率比未掺溴时电导率提高了11个数量级.用热重、固体紫外光谱、X射线光电子能谱(XPS)研究了溴、石墨和PPA之间的相互作用.结果表明,掺溴纳米石墨含量较低时,溴对复合材料电导率提高起主要作用;掺溴纳米石墨含量较高时,掺溴纳米石墨对掺溴PPA的掺杂作用是复合材料电导率提高的主要作用;掺溴纳米石墨含量更高时,由掺溴纳米石墨直接相连所构成的导电网络对复合材料电导率提高起主要作用.Abstract: The electrical conductivity of polyphenylacetylene (PPA) was enhaced by eleven orders of magnitude after absorption of bromine vapor. TG, UV-Vis spectra, and XPS spectra were used to study the interaction among bromine, nano-graphite and PPA. According to the results, bromine played a major role to enhance the conductivity of the composites when the weight percentage of bromine doped graphite was low. When the weight percentage of bromine doped graphite was high, the doping effect formed by bromine doped nanographite and bromine doped PPA, was the main point to enhance the conductivity. When the weight percentage of bromine doped nano-graphite was higher, the conductive network formed by bromine doped nano-graphite, played a major role.
点击查看大图
计量
- 文章访问数: 2646
- HTML全文浏览量: 25
- PDF下载量: 1258
- 被引次数: 0