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  • 한양대학교 기관으로 출판된 최신 SCI급 논문현황 (Web Of Science에서 제공되는 자료)
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SCI Article

High-strength graphene and polyacrylonitrile composite fiber enhanced by surface coating with polydo
Author Kim, Hyunsoo (Dept Biomed Engn); 김선정 (Dept Biomed Engn);
Corresponding Author Info Kim, SJ (reprint author), Hanyang Univ, Dept Biomed Engn, Ctr Self Powered Actuat, Seoul 04763, South Korea.
E-mail 씠硫붿씪 븘씠肄sjk@hanyang.ac.kr
Document Type Article
Source COMPOSITES SCIENCE AND TECHNOLOGY Volume:149 Issue: Pages:280-285 Published:2017
Times Cited 0
External Information PDF 븘씠肄http://dx.doi.org/10.1016/j.compscitech.2017.05.029
Abstract Carbon fibers are well-known reinforcing elements in advanced composites, but these materials remain expensive partly due to the complex processing methods used to form high strength and, high modulus fibers. Graphene is seen as an alternative precursor for the formation of high strength carbon-based fibers. Here it is shown that the strength and modulus of graphene-based fibers are enhanced by incorporating a polyacrylonitrile (PAN) binder, surface coating with polydopamine (PDA) and through appropriate pyrolysis heat treatments. Fiber samples were prepared by a wet-spinning method such that the composition of liquid-crystalline graphene oxide (LCGO) and PAN could be varied over the full range. The maximum fiber mechanical strength (220 MPa) and modulus (19 GPa) occurred at a composition of LCGO (80 wt%) and PAN (20 wt%). The mechanical strength was further significantly increased to 526 MPa through pyrolysis of the LCGO/PAN fiber at 800 degrees C in a nitrogen atmosphere which caused carbonization of PAN. In addition, surface treatment of the LCGO/PAN fiber with PDA before carbonization improved the mechanical strength by an additional 40%. (C) 2017 Elsevier Ltd. All rights reserved.
Web of Science Categories Materials Science, Composites
Funding Creative Research Initiative Center for Self-Powered Actuation in Korea; Australian Research Council (ARC) Centre of Excellence Scheme [CE 140100012]; Australian National Fabrication Facility (ANFF)
Language English
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