Differences in dry shrinkage of bamboo rings with multiple heights and radians based on vascular bundle group
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Abstract
Moso bamboo is widely used in production due to its high strength-to-weight ratio, fast growth and renewability. Meanwhile, bamboo’s dimension is highly sensitive to moisture, resulting in cracking and other defects easily. This study aimed to investigate the changes in cracks, bamboo ring shapes, fiber sheath area and volume fraction, and vascular bundle group shapes from the green state to the absolute-dry state, using the target detection model and Python fitting technique. The results showed that the radius of the vascular bundle group increased while its radian and arc length decreased with a decrease in the moisture content. The decrease in the cross-sectional area was greater than that in the wall thickness and arc length. The dry shrinkage of the fibers was greater than that of the rest tissues, which was an important part of the shrinkage of bamboo rings. Obvious cracks mainly appeared in the bamboo ring with a complete radian of 2π, while almost no or very limited cracks were seen in other rings with incomplete radians. This study further elaborated on the dry shrinkage changes and differences in bamboo rings, which might be beneficial to restrain the deformation and cracking of bamboo products effectively.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 32071855
Funding source: Basic Scientific Research Funds of the International Center for Bamboo and Rattan
Award Identifier / Grant number: 1632022016
Acknowledgments
The authors would like to thank Dr. Wenfu Zhang (associate researcher) and his team from Zhejiang Academy of Forestry for his guidance during sample collection.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was supported by the National Natural Science Foundation (grant no. 32071855) and the Basic Scientific Research Funds of the International Center for Bamboo and Rattan (grant no. 1632022016).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- Original Articles
- Wood with improved hydrophobicity and thermal stability after depositing polydimethysiloxane/silica sol hybrid
- Evaluation of the dissolving ability of cellulosic pulps: investigation of a novel method using light scattering follow-up during classical cellulose carbanilation
- Mild depolymerization of alkaline lignin in a formic acid-choline chloride type deep eutectic solvent system
- On the hydrothermal depolymerisation of kraft lignin using glycerol as a capping agent
- Improved dimensional stability and mechanical properties of rubberwood via modification with maleated lignin and densification
- Insight into the mechanism underlying modification of Neosinocalamus affinis by hygrothermal treatment
- Degradation assessment of archaeological oak (Quercus spp.) buried under oxygen-limited condition
- Differences in dry shrinkage of bamboo rings with multiple heights and radians based on vascular bundle group
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Wood with improved hydrophobicity and thermal stability after depositing polydimethysiloxane/silica sol hybrid
- Evaluation of the dissolving ability of cellulosic pulps: investigation of a novel method using light scattering follow-up during classical cellulose carbanilation
- Mild depolymerization of alkaline lignin in a formic acid-choline chloride type deep eutectic solvent system
- On the hydrothermal depolymerisation of kraft lignin using glycerol as a capping agent
- Improved dimensional stability and mechanical properties of rubberwood via modification with maleated lignin and densification
- Insight into the mechanism underlying modification of Neosinocalamus affinis by hygrothermal treatment
- Degradation assessment of archaeological oak (Quercus spp.) buried under oxygen-limited condition
- Differences in dry shrinkage of bamboo rings with multiple heights and radians based on vascular bundle group
