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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.“,”After multi-walled carbon nanotubcs (MWNTs) were functionalized with p-phenylenediamine, DBSA re-doped polyaniline grafted MWNTs (PANI-g-MWNTs) composite with high solubility and stability in NMP was synthe-sized by in situ polymerization followed by de-doping and re-doping reactions for the first time. Study results showed that PANI chains link with p-MWNTs via amide bond and core (p-MWNTs)-shelI(PANI) nano-structures were formed in the composite; in virtue of strengthen of chemical bonding between p-MWNTs and polymer chains as well as the solubility of DBSA re-doped PANI, the composite achieves improving stability for about 1 month and solubility of 35.56mg/mL in NMP. Thermal stability of the composite was highly improved in the range of 300～500℃ and electrical conductivity at room temperature for the composite was increased by about two orders of magnitude compared with that of DBSA re-doped PANI.