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Updated: May 13, 2026
Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
Published on: July 2, 2012
Top-down process based on electrospinning, twisting, and heating for producing one-dimensional carbon nanotube
Shinji Imaizumi1, Hidetoshi Matsumoto, Yuichi Konosu
1Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-S8-27 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
Abstract:
Multiwalled carbon nanotube (MWNT)/poly(vinyl butyral) (PVB) composite nanofibers were prepared by electrospinning, successive twisting and heat treatment. The MWNTs were highly oriented in an electrified thin jet during electrospinning. The heat treatment of the twisted electrospun nanofiber yarns produced the characteristics of the CNT in the composite nanofiber yarns and enhanced their electrical properties, mechanical properties, and thermal properties. The electrical conductivity of the heated yarn was significantly enhanced and showed the maximum value of 154 S cm(-1) for the yarn heated at 400 °C. It is an order of magnitude higher than other electrospun CNT composite materials. These results demonstrated that the novel top-down process based on electrospinning, twisting, and heat treatment provide a promising option for simple and large-scale manufacture of CNT assemblies.
