Influence of surface modification on the microstructure and thermo-mechanical properties of bamboo fibers

Xiaoping Zhang, Fang Wang*, Leon M. Keer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)6597-6608
Number of pages12
JournalMaterials
Volume8
Issue number10
DOIs
StatePublished - 2015

Keywords

  • Alkali treatment
  • Mechanical performance
  • Natural fiber
  • Testing
  • Thermal properties

ASJC Scopus subject areas

  • Materials Science(all)

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