聚噻吩/碳纳米管复合材料的制备与性能研究

Synthesis and property study of polythiophene/carbon nanotube composites

利用原位化学氧化聚合法将噻吩单体原位聚合包覆在碳纳米管上,制备出聚噻吩/碳纳米管(PTh/CNT)复合材料,并对其形貌、结构、电性能和热稳定性等进行了初步的研究。研究结果表明聚噻吩包覆在碳纳米管上形成以碳纳米管为核,以聚噻吩为壳的核壳纳米线结构。加入少量的碳纳米管就能显著改善导电聚合物的电性能和热性能。碳纳米管的加入没有改变聚噻吩的主链结构,对聚噻吩的结晶状况也没有产生很大的影响。

In this paper,polythiophene （PTh）/carbon nanotube （CNT） composites were synthesized via in situ chemical oxidative polymerization. The morphology, structures, electric property, thermal property and other properties of the composites were studied. The studies showed that the composites were nanowires with coreshell structure and the addition of a few CNTs could improve the electric property and thermal property obviously. The molecular structure of PTh was not changed by the addition of CNTs. Meanwhile, the XRD patterns of the materials showed that the addition of CNTs could not make the amorphous condition of PTh change obviously.