Lignin-based carbon fibers: Carbon nanotube decoration and superior thermal stability |
| |
| Affiliation: | 1. Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, United States;2. King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, COHMAS Laboratory, Thuwal 23955-6900, Saudi Arabia;3. Microscopy Core Facility, North Dakota State University, Fargo, ND 58108, United States;1. Program of Materials Engineering and Science, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;2. Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;1. Program of Nanoscience and Nanoengineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;2. Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;1. Program of Nanoscience and Nanoengineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;2. Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;3. Program of Materials Engineering and Science, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA;1. Fiber and Polymer Science, University of California-Davis, One Shields Avenue, Davis, CA 95616, United States;2. Department of Biological and Agricultural Engineering, University of California-Davis, One Shields Avenue, Davis, CA 95616, United States;1. Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK;2. Materials Research Institute, Queen Mary University of London, Mile End Road, E1 4NS, London, UK;3. RISE Bioeconomy, Drottning Kristinas Väg 61, Stockholm, Sweden;4. Departamento de Química Inorgánica, Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain;5. Imperial College London, Department of Chemical Engineering, South Kensington Campus, SW7 2AZ, London, UK |
| |
| Abstract: | Lignin-based carbon fibers (CFs) decorated with carbon nanotubes (CNTs) were synthesized and their structure, thermal stability and wettability were systematically studied. The carbon fiber precursors were produced by electrospinning lignin/polyacrylonitrile solutions. CFs were obtained by pyrolyzing the precursors and CNTs were subsequently grown on the CFs to eventually achieve a CF–CNT hybrid structure. The processes of pyrolysis and CNT growth were conducted in a tube furnace using different conditions and the properties of the resultant products were studied and compared. The CF–CNT hybrid structure produced at 850 °C using a palladium catalyst showed the highest thermal stability, i.e., 98.3% residual weight at 950 °C. A mechanism for such superior thermal stability was postulated based on the results from X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopy, and electron energy loss spectroscopy analyses. The dense CNT decoration was found to increase the hydrophobicity of the CFs. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
