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<p>Addressing the issue that thick bamboo slices (≥ 1&#xa0;mm) exhibit high bending stiffness and cause premature cutting-tip splitting, resulting in poor surface quality. This study investigated the effects of saturated steam treatment on the surface quality and mechanical properties of the bamboo during slicing process, and analyzed physicochemical mechanisms through XRD, FTIR, and SEM test. The results show that chemical functional groups, microstructure, and relative crystallinity of bamboo were changed, glass transition temperature and bending stiffness was reduced, and Mode I fracture toughness was enhanced, so that saturated steam treatment mitigates the degree of premature splitting during slicing and significantly improves surface quality. Under optimal softening conditions (160&#xa0;°C/10 min), saturated steam treatment reduced sliced surface roughness by 37.98%, and lowered glass transition temperature by 19.67%, flexural strength and elastic modulus decreased by 59.66% and 42.88%, respectively, while Mode I critical displacement increased by 113.08% and <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="226_2025_1715_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="32" /> </InlineMediaObject> <EquationSource Format="TEX">\({G_{IC}}\)</EquationSource> </InlineEquation>increased by 179.08%. Studying bamboo surface roughness, chemical, and mechanical properties are expected to lay a foundation for bamboo slicing, mechanics research, and slicing cracking.</p>

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Effect of saturated steam on the surface quality and mechanical properties of sliced bamboo

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • Caimei Liu,
  • Siyu Zhou,
  • Xianjun Li,
  • Fuming Chen,
  • Xizhi Wu,
  • Yuanshuo Huang,
  • Hongqian Zhu

摘要

Addressing the issue that thick bamboo slices (≥ 1 mm) exhibit high bending stiffness and cause premature cutting-tip splitting, resulting in poor surface quality. This study investigated the effects of saturated steam treatment on the surface quality and mechanical properties of the bamboo during slicing process, and analyzed physicochemical mechanisms through XRD, FTIR, and SEM test. The results show that chemical functional groups, microstructure, and relative crystallinity of bamboo were changed, glass transition temperature and bending stiffness was reduced, and Mode I fracture toughness was enhanced, so that saturated steam treatment mitigates the degree of premature splitting during slicing and significantly improves surface quality. Under optimal softening conditions (160 °C/10 min), saturated steam treatment reduced sliced surface roughness by 37.98%, and lowered glass transition temperature by 19.67%, flexural strength and elastic modulus decreased by 59.66% and 42.88%, respectively, while Mode I critical displacement increased by 113.08% and \({G_{IC}}\) increased by 179.08%. Studying bamboo surface roughness, chemical, and mechanical properties are expected to lay a foundation for bamboo slicing, mechanics research, and slicing cracking.