Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica

Yu, Linpeng; Dai, Fukuan; Zhang, Kangjian; Jiang, Zehui; Xia, Mingsong; Wang, Youhong; Tian, Genlin

doi:10.3390/plants12162987

Open AccessArticle

Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica

by

Linpeng Yu

^1,2,3,†

,

Fukuan Dai

^1,2,†,

Kangjian Zhang

³,

Zehui Jiang

^1,2,

Mingsong Xia

^1,2,

Youhong Wang

³ and

Genlin Tian

^1,2,*

¹

Institute of New Bamboo and Rattan Based Biomaterials, International Center for Bamboo and Rattan, Beijing 100102, China

²

Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China

³

School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Plants 2023, 12(16), 2987; https://doi.org/10.3390/plants12162987

Submission received: 5 July 2023 / Revised: 10 August 2023 / Accepted: 14 August 2023 / Published: 18 August 2023

(This article belongs to the Special Issue Phytomorphology, Anatomy and Ultrastructure)

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Abstract

Unlike the culm hollow structure of most bamboo species, Oxytenanthera abyssinica has a unique solid or semi-solid culm, which may endow it with superior mechanical performance. In this study, the variation in fiber morphology and micro-mechanical properties across the radial regions of bamboo culm was examined by optical microscopy, scanning electron microscopy, X-ray diffraction, and nanoindentation. Results showed that the mean values of vascular bundle frequency and fiber tissue proportion were 1.76 pcs/mm

^{2}

and 21.04%, respectively, both of which increased gradually from inner to outer. The mean length, diameter, and length-diameter ratio of the fiber were 2.10 mm, 21.54

μ

m, and 101.41 respectively. The mean indentation modulus of elasticity (IMOE) and hardness were 21.34 GPa and 545.88 MPa. The IMOE exhibited a significant increase from the inner to the middle region, and little change was observed from the middle to the outer region. There were slight fluctuations in hardness along the radial direction. The mean crystallinity and microfibril angle(MFA) of the fibers was 68.12% and 11.26 degrees, respectively. There is a positive correlation between cellulose crystallinity and the IMOE and hardness, while there is a negative correlation between the MFA and the IMOE and the hardness.

Keywords: Oxytenanthera abyssinica; fiber; nanoindentation; cellulose crystallinity; microfibril angle

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MDPI and ACS Style

Yu, L.; Dai, F.; Zhang, K.; Jiang, Z.; Xia, M.; Wang, Y.; Tian, G. Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica. Plants 2023, 12, 2987. https://doi.org/10.3390/plants12162987

AMA Style

Yu L, Dai F, Zhang K, Jiang Z, Xia M, Wang Y, Tian G. Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica. Plants. 2023; 12(16):2987. https://doi.org/10.3390/plants12162987

Chicago/Turabian Style

Yu, Linpeng, Fukuan Dai, Kangjian Zhang, Zehui Jiang, Mingsong Xia, Youhong Wang, and Genlin Tian. 2023. "Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica" Plants 12, no. 16: 2987. https://doi.org/10.3390/plants12162987

APA Style

Yu, L., Dai, F., Zhang, K., Jiang, Z., Xia, M., Wang, Y., & Tian, G. (2023). Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica. Plants, 12(16), 2987. https://doi.org/10.3390/plants12162987

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