Investigation of Microfibril Angle of Flax Fibers Using X-Ray Diffraction and Scanning Electron Microscopy

ABSTRACT

Microfibril angle (MFA) of secondary cell wall has an important effect on the mechanical properties of flax fibers. It is therefore essential to study the relationships between MFA and mechanical properties. This paper investigated MFA of seven flax fibers by using X-ray diffraction (0.6T method) and scanning electron microscopy (SEM; direct observation). The results showed that there is no significant difference between MFA obtained by X-ray diffraction (6.2–7.2°) and SEM (5.8–7.3°). Correlation analysis results showed a good linear correlation (>0.9) between two methods.

摘要

次生细胞壁 的微纤丝角（MFA）对亚麻纤维的力学性能有重要影响。本文用X-射线衍射(0.6T法)和扫描电镜(直接观察)研究了7种亚麻纤维的MFA。结果表明，X射线衍射（6.2°～7.2°）和扫描电镜（5.8°～7.3°）所得的MFA值无显著性差异。相关性结果表明，两种方法的线性相关系数（＞0.9）良好。

KEYWORDS:

• Flax fiber
• secondary cell wall
• microfibril angle
• X-ray diffraction
• scanning electron microscopy
• 0.6T method

关键词:

• 亚麻纤维
• 次生细胞壁
• 微纤丝角
• X射线衍射”
• 扫描电子显微镜
• 0.6 T法

Acknowledgments

The authors would like to thank the funding and equipment support of the FibreCITY, Composites Innovation Centre, Canada. Thanks for M. Alcock, F. Wheeler, J. Bell and S. DuCharme’s help.

Additional information

Funding

This study was initiated by National Natural Science Foundation, China [11802205] and research grants [KF1811] supported by the state key laboratory of automotive safety and energy of Tsinghua University.