화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.25, No.10, 1015-1021, October, 2017
DOI10.1007/s13233-017-5139-0  Export Citation
Enhanced Thermal Conductivity and Mechanical Properties of Polyurethane Composites with the Introduction of Thermally Annealed Carbon Nanotubes
Yu-Mi Ha1, 2, Daun Lim1, 3, Sol Yi Lee1, 4, Jaewoo Kim1, 5, Jin Hee Kim6, Yoong Ahm Kim3, and Yong Chae Jung1, 5, †
  • 1Multifunctional Structural Composite Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk 55324, Korea
  • 2School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
  • 3Department of Polymer Engineering, Graduate School, School of Polymer Science and Engineering & Alan G. MacDiarmid Energy Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea
  • 4Department of Polymer Nano Science& Technology, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-shi, Jeonbuk 54896, Korea
  • 5Department of Nanomaterials and Nano Science, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
  • 6Biohousing Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, 61186, Korea
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Here we report a significant enhancement in the physical properties of polyurethane composites by incorporating thermally annealed carbon nanotubes. The highly pure and crystalline carbon nanotubes were prepared by thermally annealing the catalytically grown thin multi-walled carbon nanotubes (t- MWNTs) at 2,300 °C using a graphite furnace in argon. The results of thermally annealing the catalytically as-grown carbon nanotubes in argon at high temperature were the effective removal of metallic impurities, the decrease in both the interlayer spacing and R-value, and the development of straight, crystalline layers. Moreover, the observation of the strong optical signal from the thermally annealed carbon indicates the possibility of growing small diameter innermost tubes below 1 nm within the hollow core of t-MWNTs. Finally, the introduction of the thermally annealed carbon nanotubes allowed us to make more mechanically strong and more thermally conductive polyurethane nanocomposites.
Keywords:thermal annealing;carbon nanotube;polyurethane;nanocomposites
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