Vascular bundle characteristics and mechanical properties of Dendrocalamus sinicus

Dai, Fukuan; Wang, Ziwei; Wang, Hankun; Zhang, Wenfu; Zhong, Tuhua; Tian, Guohui

doi:10.1016/j.conbuildmat.2022.129858

Cited by 10 publications

(5 citation statements)

References 28 publications

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“…The average IMOE and hardness of O. sulcatum were 21.7 GPa and 604 MPa, respectively, which were similar to those of moso bamboo (22.0 GPa and 530 MPa), and the IMOE was slightly higher than that of Bambusa arundinacea (20.8 GPa and 497 MPa), while the hardness was much higher than that of B. arundinacea (Dai et al 2023b;Huang et al 2016). Compared to the world's largest bamboo, Dendrocalamus sinicus (24.1 GPa and 626 MPa), the IMOE and hardness of O. sulcatum were lower (Dai et al 2023a).…”

Section: The Mechanical Properties Of Fibersmentioning

confidence: 55%

Analyzing fiber and vascular bundle characteristics, and micro-mechanical properties of Oligostachyum sulcatum

Zhang,

Zhao,

et al. 2024

BioRes

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The structure of vascular bundles and the mechanical properties of fibers are crucial factors determining the utilization of bamboo. This study investigated the structure of vascular bundles and evaluated the morphological and micromechanical properties of the fibers in Oligostachyum sulcatum. The results showed that the fiber length and width of O. sulcatum meet the requirements of raw materials for the papermaking process. However, the fiber content in O. sulcatum is relatively low, which may increase the cost of papermaking. The vascular bundle growth exhibited non-uniformity, especially at the top part, with no discernible pattern in bundle area changes. The nanoindentation testing demonstrated that the bamboo’s indentation modulus of elasticity (IMOE) and hardness values were comparable to those of moso bamboo (Phyllostachys edulis), suggesting its potential as a substitute in engineering applications.

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Section: The Mechanical Properties Of Fibersmentioning

confidence: 55%

Analyzing fiber and vascular bundle characteristics, and micro-mechanical properties of Oligostachyum sulcatum

Zhang,

Zhao,

et al. 2024

BioRes

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“…Consequently, the compressive strength also gradually increases from the base to the top along the axial direction (Figures 7 and 8a). The average compressive strength of B. arundinaceae was 113.99 MPa, which is twice that of moso bamboo (57.7 MPa), and even higher than that of Dendrocalamus sinicus (92.56 MPa), the world's largest bamboo [30,31]. Samples taken from the lower region of the bamboo exhibited a lower distribution density of VBs, yet exhibited a higher content of PCs and possessed thicker walls.…”

Section: Compression Experiments 321 Compressive Properties In the Ax...mentioning

confidence: 88%

Bamboo Structure and Its Impact on Mechanical Properties: A Case Study of Bambusa arundinaceae

Zhang,

Yu,

Dai

et al. 2024

Forests

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Bamboo is a naturally occurring composite material, which exhibits a decomposable structure with varying composition. The distinct structural features of bamboo contribute to its exceptional strength and flexibility, making it an excellent choice for construction purposes. However, only a limited portion of bamboo species has been studied for its mechanical properties, and research on Bambusa arundinaceae has primarily focused on its pharmaceutical values. Therefore, we investigated the relationship between the structural characteristics of B. arundinaceae and its mechanical properties using axial compression experiments and tangential bending experiments. The results showed that the distribution density of vascular bundles (VBs) of B. arundinaceae ranged from 1.98 to 4.34 pcs/mm2,while the volume fraction of fiber sheaths (FSs) ranged from 35.82 to 42.58%. The average compressive strength, flexural strength, and flexural elasticity modulus were 113.99 MPa, 239.07 MPa, and 17.39 GPa, which were 97.56%, 64.07%, and 66.09% higher than those of moso bamboo (Phyllostachys edulis), respectively. The compressive strength, flexural strengths, and elasticity modulus of B. arundinaceae were positively correlated with both the distribution density of VBs and the volume fraction of FSs. These insights are crucial for the advancement of durable and efficient materials in diverse sectors including construction and manufacturing.

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“…(Dai et al, 2023), the basic density, density of vascular bundle distribution, area of individual vascular bundles, and tissue ratio of brous sheaths of D. sinicus are all larger than those of P.sedulis.…”

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confidence: 79%

Effects of microwave softening treatment on dynamic mechanical and chemical properties of bamboo

Qin,

Yu,

et al. 2024

J Mater Sci

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Bamboo is a high-quality biomass material, but its thin walls and hollowness, limit subsequent processing. Softening can atten and bend bamboo without causing cracks, and thus enables e cient value-added use. In this study, the effects of microwave softening parameters (microwave power, processing time, and initial moisture content) on the glass transition temperature, compression ratio, microstructure, chemical composition, and surface wettability of Phyllostachys. edulis and Dendrocalamus. sinicus were studied. Microwave softening parameters (microwave power, treatment time, initial moisture content) improved the exibility and processability of both bamboo species. Dynamic mechanical analysis showed the storage modulus of D. sinicus slices was reduced from 7846 to 4498 MPa, which was 1.06 times higher than that of P. edulis. The glass transition temperature was lowered from 221.25 to 123.67°C, which was1.07 times higher than that of P. edulis, indicating bamboo stiffness was reduced and elasticity was enhanced. Moreover,P. edulis has higher thermoplastic quality than D. sinicus. Water molecules have a wetting and swelling effect on the cell wall. With a rise in water content, the free hydroxyl group increased, and the compression ratio of P. edulis with a moisture content of 90% increased from 15.65-45.54%, and that of D. sinicus increased from 11.31-41.67%. Hence, choosing the most adaptable bamboo species and moisture content, and increasing the softening temperature and softening time can improve the attening quality of bamboo and effectively reduce the number of hydroxyl and carbonyl groups, and thus offers a theoretical basis for the industrial processing of bamboo timbers.

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Vascular bundle characteristics and mechanical properties of Dendrocalamus sinicus

Cited by 10 publications

References 28 publications

Analyzing fiber and vascular bundle characteristics, and micro-mechanical properties of Oligostachyum sulcatum

Analyzing fiber and vascular bundle characteristics, and micro-mechanical properties of Oligostachyum sulcatum

Bamboo Structure and Its Impact on Mechanical Properties: A Case Study of Bambusa arundinaceae

Effects of microwave softening treatment on dynamic mechanical and chemical properties of bamboo

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