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Fibers 2017, 5(3), 32; doi:10.3390/fib5030032

Multi-Scale Carbon (Micro/Nano) Fiber Reinforcement of Polyetheretherketone Using High Shear Melt-Processing

Department of Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
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Academic Editor: Sushanta Ghoshal
Received: 8 July 2017 / Revised: 2 August 2017 / Accepted: 17 August 2017 / Published: 28 August 2017
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Abstract

Fiber-reinforced polymer matrix composites offer lightweight, high mechanical performance but have required much effort to achieve good fiber–matrix adhesion and uniform distribution, and generally suffer from low impact resistance. In this work, a uniform, high shear melt-processing method was used to prepare carbon fiber (CF) reinforced polyetheretherketone (PEEK), carbon nanofiber (CNF) reinforced PEEK, and multi-scale CF and CNF reinforced PEEK composites. Scanning electron microscopy images show good fiber distribution and fiber–matrix interaction, as well as surface crystallization of PEEK from the fiber surfaces. Tensile modulus and strength increase most significantly with the addition of CF but with a loss in ductility. The multi-scale composite of CF–CNF-PEEK displays the stiffening effect from the CF and retains more ductility due to the CNF. Further, the CF–CNF-PEEK composite displays the highest impact energy absorption. This study shows that good mixing of CFs and CNFs is achievable in PEEK using a uniform, high shear processing method that can easily produce intricate shapes and provides a stiff, high impact energy absorption multi-scale carbon fiber-reinforced composite. View Full-Text
Keywords: fiber-reinforced polymer composites; carbon nanofiber; high performance carbon fiber; new processing methods for composites; multi-scale-reinforced polymer composites; surface crystallization fiber-reinforced polymer composites; carbon nanofiber; high performance carbon fiber; new processing methods for composites; multi-scale-reinforced polymer composites; surface crystallization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Tewatia, A.; Hendrix, J.; Nosker, T.; Lynch-Branzoi, J. Multi-Scale Carbon (Micro/Nano) Fiber Reinforcement of Polyetheretherketone Using High Shear Melt-Processing. Fibers 2017, 5, 32.

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