カーボンナノチューブ合成・分散とその応用

抄録

carbon nanotube （CNT） is a type of carbon nanomaterial. Its diameter is on the nanometer scale, andits length is on the micron scale. CNT has remarkable properties. There are various types of CNT synthesismethods. However, it is difficult to disperse CNTs after synthesis; thus, dispersion techniques are vital. In thispaper, we introduce a CNT dispersion technique and present the characterization of CNT samples. To disperseCNTs, it is important to choose appropriate equipment and dispersants. Sonication and wet-jet milling aresuperior techniques for dispersing CNTs. Surfactants or polycyclic aromatic hydrocarbon compounds arewidely used as dispersing agents. However, designing and selecting dispersing agents is a serious challenge.Spectroscopy and microscopy are standard techniques for evaluating CNT dispersion. UV–Vis–NIR andRaman spectroscopies, atomic force, scanning electron and transmissionelectron microscopies are widelyused to characterize and dispersed CNTs. CNTs are applied broadly in various fields; for example, in materialsengineering, they are useful for achieving high mechanical performance in polymer composites and forpreparing rubber compounds with low electrical resistivity, as well as many other applications. Furthermore,CNTs are also applied in sensors, transistors, and high transparent/low surface resistivity films.