论文部分内容阅读
多壁碳纳米管(MWNTs)经对苯二胺功能化后,通过原位聚合及去掺杂和二次掺杂反应,首次制备了能在N-甲基吡咯烷酮(NMP)中稳定溶解的十二烷基苯磺酸(DBSA)二次掺杂聚苯胺接枝MWNTs(PANI-g-MWNTs)复合材料。研究表明:复合材料中PANI与p-MWNTs通过酰胺键连接,形成以p-MWNTs为核、DBSA二次掺杂PANI为壳的纳米复合结构;当复合材料溶解在NMP中时,借助DBSA二次掺杂PANI的溶解性和p-MWNTs与PANI间的连接作用,使其在NMP中获得35.56mg/mL的溶解度和近1个月的稳定性;该复合材料的热稳定性在300~500℃明显提高,其室温电导率较DBSA二次掺杂PANI提高近两个数量级。
Multiwalled carbon nanotubes (MWNTs) were first functionalized with p-phenylenediamine, and were first prepared by in-situ polymerization and de-doping and secondary doping reactions, which can stably dissolve in N-methylpyrrolidone Polyaniline grafted MWNTs (PANI-g-MWNTs) composites were doubly doped with diallylbenzene sulfonic acid (DBSA). The results show that PANI and p-MWNTs are connected by amide bond to form nanocomposite structure with p-MWNTs as the core and DBSA as the secondary PANI as the shell. When the composite is dissolved in NMP, The solubility of doped PANI and the connection between p-MWNTs and PANI make it obtain the solubility of 35.56mg / mL in NMP and the stability of nearly one month. The thermal stability of the composite is between 300 ℃ and 500 ℃ Obviously increased. The room temperature conductivity is about two orders of magnitude higher than that of DBSA secondary doping PANI.