期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 71, 期 14, 页码 1665-1670出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2011.07.018
关键词
Carbon nanotubes; Fibers; Nanocomposites; Recycable
资金
- Agency for Science, Technology and Research (A*STAR) of Singapore [M47120012.703012]
A surface-draw method to fabricate recyclable carbon nanotube/polyvinyl butyral (CNT/PVB) composite fibers is reported. This method is effective for both single-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube. The CNT mass content of CNT/PVB composite fibers can vary from 0 to 80 wt.%, which is higher than most CNT/polymer composites reported to date. The diameter of the composite fibers can be controlled in the range of 10-100 mu m, with essentially unlimited draw length. The composite fibers with 7.4 wt.% SWCNTs showed optimal tensile properties. Compared with pure PVB fibers, the tensile strength, failure strain, and elastic modulus of the composite fiber have improved about 127%, 27%, and 73%, respectively. In addition, SWCNT/PVB composites with 66.7 wt.% SWCNTs have the highest conductivity of 42.9 S m(-1). More importantly, the major benefit is the greenness of the method, which involves environment friendly ethanol-water solvent with no functionalization of the nanotube required, and only simple apparatus are needed. The CNT/PVB composite fibers obtained can be dissolved in ethanol solution and reformed with the surface draw method without any additional treatment; and the material properties after recycle is comparable to those fabricated in the first round. (C) 2011 Elsevier Ltd. All rights reserved.
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