Effects of functional group of carbon nanotubes on mechanical properties of carbon fibers. (July 2015)

• Record Type: Journal Article
• Authors: Park, Ok-Kyung; Chae, Han-Seok; Park, Gil Young; You, Nam-Ho; Lee, Sungho; Bang, Yun Hyuk; Hui, David; Ku, Bon-Cheol; Lee, Joong Hee
• Is Part Of: Composites. Volume 76(2015)
• Page Start: 159
• Page End: 166
• Publication Date: 2015-07
• Subjects: A. Carbon fibre -- B. Mechanical properties -- E. Surface treatments; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2015.02.021
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: The effects of surface functionalization of carbon nanotubes (CNTs) on the mechanical properties of carbon fibers (CFs) have been investigated. The surface functionalization of CNTs was carried out with a diazonium reagent. Compared to pure PAN, only the fluoro phenyl functionalized CNTs (F-Ph-CNT) incorporated PAN composites showed a significant increase up to 22 °C of Tg and displayed the second peak due to the interfacial interaction between F-Ph-CNT and PAN. Among the samples, 0.5wt% of F-Ph-CNT reinforced CFs exhibited a 46% increase in tensile strength (4.1 GPa) and a 37% increase in modulus (302 GPa), respectively compared to that of pure CFs.