Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Dispersibility of multi-walled carbon nanotubes functionalized with butyl and hexyl group

Butyl 및 Hexyl기가 도입된 다중벽 탄소나노튜브의 분산성

  • Ryu, Jeong-Hyun (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Nam, Byeong-Uk (Department of Applied Chemical Engineering, Korea University of Technology and Education)
  • 유정현 (한국기술교육대학교 응용화학공학과) ;
  • 남병욱 (한국기술교육대학교 응용화학공학과)
  • Received : 2010.05.12
  • Accepted : 2010.07.06
  • Published : 2010.07.31
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Abstract

To improve the CNT's dispersion, we tried to chemically modify the surface of MWNT with the butyllithium and the hexyllithium solution in sonicated reactor. The functionalized-MWNTs were characterized by Fourier transform infrared spectrometer(FT-IR) and Raman spectrophotometer. Also, we investigated the amount of alkyl moiety incorporated into MWNT's surface with Thermal gravimetric analyzer(TGA) and dispersibility in various organic solvents. Finally, we could find organic content was about 5% of the functionalized MWNT and dispersibility was enhanced in some solvents having intermediate solubility parameter.

탄소나노튜브의 분산성을 개선하고자 다중벽 탄소나노튜브(multi-walled carbon nanotube, MWNT)를 초음파 반응기에서 butyllithium 및 hexyllithium solution을 이용하여 표면을 화학적으로 개질하였다. 개질된 MWNT는 적외선 분광분석 및 라만분광법을 이용하여 MWNT에 알킬기가 도입되었는지를 확인하였다. 또한, 열중량분석기를 이용하여 알킬기가 MWNT에 도입된 함량을 분석하였으며, MWNT 및 개질된 MWNT를 다양한 용매에 따른 분산성을 조사하였다. 그 결과 유기물의 함량은 5% 내외로 분석되었고 일정 범위내의 용해도 상수를 갖는 용매에 분산성이 개선됨을 확인하였다.

Keywords

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