Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Fabrication of Networked Carbon Nanofiber Mats, and Analysis of Their Thermal Properties

네트워크화된 탄소나노섬유 매트의 제조 및 열전도 특성 평가

  • Kim, Jina (Department of Materials Science and Engineering, Seoul National University) ;
  • Na, Won-Jin (Department of Materials Science and Engineering, Seoul National University) ;
  • Yu, Woong-Ryeol (Department of Materials Science and Engineering, Seoul National University)
  • 김지나 (서울대학교 재료공학부) ;
  • 나원진 (서울대학교 재료공학부) ;
  • 유웅열 (서울대학교 재료공학부)
  • Received : 2013.05.13
  • Accepted : 2013.07.19
  • Published : 2013.08.31
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Abstract

The main purpose of this research was to fabricate carbon nanofiber (CNF) mats with a high thermal conductivity, by electrospinning of poly(acrylonitrile) (PAN) and subsequent thermal treatment. To improve the thermal conductivity of the CNF mats, isotropic and mesophase pitches were co-axially electrospun with a PAN shell. The mesophase pitch in this research was prepared by thermal treatment from isotropic pitch, and the structural properties were evaluated by Raman spectroscopy and X-ray diffraction analysis. The contact resistance between CNFs in mats was effectively reduced by wetting of the PAN shell using ethanol and the formation of a networked structure during thermal processing. The thermal conductivity of the resulting CNF mats was measured by a laser flash method, and a significantly improved thermal conductivity was obtained for isotropic pitch-PAN CNF mats. This is attributed to a networked structure, a well-developed carbon structure, and a reduced contact resistance.

Keywords

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