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Materials 2015, 8(10), 6597-6608; doi:10.3390/ma8105327

Influence of Surface Modification on the Microstructure and Thermo-Mechanical Properties of Bamboo Fibers

1
Faculty of Materials and Energy, Southwest University, Chongqing 400715, China
2
Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Armando J. D. Silvestre
Received: 11 August 2015 / Revised: 2 September 2015 / Accepted: 21 September 2015 / Published: 24 September 2015
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Abstract

The objective of this study is to investigate the effect of surface treatment on the morphology and thermo-mechanical properties of bamboo fibers. The fibers are subjected to an alkali treatment using 4 wt % sodium hydroxide (NaOH) for 1 h. Mechanical measurements show that the present concentration has an insignificant effect on the fiber tensile strength. In addition, systematic experimental results characterizing the morphological aspects and thermal properties of the bamboo fibers are analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. It is found that an alkali treatment may increase the effective surface area, which is in turn available for superior bonding with the matrix. Fourier transform infrared spectroscopy analysis reveals that the alkali treatment leads to a gradual removal of binding materials, such as hemicellulose and lignin from the bamboo fiber. A comparison of the curve of thermogravimetric analysis and differential scanning calorimetry for the treated and untreated samples is presented to demonstrate that the presence of treatment contributes to a better thermal stability for bamboo fibers. View Full-Text
Keywords: natural fiber; alkali treatment; thermal properties; mechanical performance; testing natural fiber; alkali treatment; thermal properties; mechanical performance; testing
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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

Zhang, X.; Wang, F.; Keer, L.M. Influence of Surface Modification on the Microstructure and Thermo-Mechanical Properties of Bamboo Fibers. Materials 2015, 8, 6597-6608.

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