Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 90, Issue -, Pages 589-597Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.08.025
Keywords
Fibers; Polymer-matrix composites (PMCs); Interface; Surface treatments
Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI Grant [JP25289243]
- JSPS (Invitation Fellowship for Research in Japan) [S-13179]
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Abaca fibers demonstrate enormous potential as reinforcing agents in composite materials. In this study, abaca fibers were immersed in 5, 10 or 15 wt.% NaOH solutions for 2 h, and the effects of the alkali treatments on the mechanical characteristics and interfacial adhesion of the fibers in a model abaca fiber/epoxy composite system systematically evaluated. After 5 wt.% NaOH treatment, abaca fibers showed increased crystallinity, tensile strength and Young's modulus compared to untreated fibers, and also improved interfacial shear strength with an epoxy. Stronger alkali treatments negatively impacted fiber stiffness and suitability for composite applications. Results suggest that mild alkali treatments (e.g. 5 wt. % NaOH for 2 h) are highly beneficial for the manufacture of abaca fiber-reinforced polymer composites. (C) 2016 Elsevier Ltd. All rights reserved.
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