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Materials 2018, 11(7), 1190; https://doi.org/10.3390/ma11071190

Study on the Interfacial Functionary Mechanism of Rare-Earth-Solution-Modified Bamboo-Fiber-Reinforced Resin Matrix Composites

1
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
2
Mechanical and Electrical Engineering Practice Center, Fuzhou University, Fuzhou 350116, China
*
Author to whom correspondence should be addressed.
Received: 6 June 2018 / Revised: 30 June 2018 / Accepted: 8 July 2018 / Published: 11 July 2018
(This article belongs to the Section Advanced Composites)
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Abstract

In this work, a new and effective treatment on bamboo fiber (BF) is presented, and its effect on the interfacial bonding properties of the BF/resin matrix was studied. The interfacial functionary mechanism of rare earth solution (RES) modification to improve the interfacial bonding properties between BF and the resin matrix was analyzed. The hardness and elastic modulus of the interfacial zone between BF and the resin matrix were measured using nanoindentation. Fourier-transform infrared spectroscopy (FT-IR) was used to analyze the change in the surface functional group of BF in the modification process. The surface chemical composition of BF before and after the modification was characterized by X-ray photoelectron spectroscopy (XPS). The results show that the RES modification significantly increases the hardness and elastic modulus of BF and its interfacial zone with the resin matrix. The hydroxyl concentration on the surface of RES-treated BF decreases, which reduces the hydrophilicity of BF. Rare earth ions react with oxygen in the hydroxyl group at the C2 position in the glucosylic ring of cellulose. The RES-modified BF bonds with the resin matrix to form a rare earth complex, which significantly enhances the interfacial adhesion between BF and the resin matrix. View Full-Text
Keywords: rear earth; modification; bamboo fiber; resin; interface; mechanism rear earth; modification; bamboo fiber; resin; interface; mechanism
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Zheng, K.; Gao, C.; He, F.; Lin, Y.; Liu, M.; Lin, J. Study on the Interfacial Functionary Mechanism of Rare-Earth-Solution-Modified Bamboo-Fiber-Reinforced Resin Matrix Composites. Materials 2018, 11, 1190.

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