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Curling behavior and mechanism of bamboo inner slivers induced by delignification treatment.

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Title: Curling behavior and mechanism of bamboo inner slivers induced by delignification treatment.
Authors: Yin, Haowei1 (AUTHOR), Liu, Huanrong2 (AUTHOR), Fang, Changhua2 (AUTHOR), An, Xin3 (AUTHOR) ax@caf.ac.cn, Wang, Xuehua1 (AUTHOR) wangxuehua@njfu.edu.cn
Source: Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood. May2026, Vol. 80 Issue 5, p387-399. 13p.
Subjects: Delignification, Curvature, Sodium hydroxide, Mechanical behavior of materials, Bamboo, Microstructure
Abstract: Bamboo inner materials are often discarded due to their loose tissue structure and low mechanical strength. Delignification can effectively enhance material performance. To improve mechanical properties and increase utilization, this study respectively treated bamboo inner slivers with delignification using sodium hydroxide and acidified sodium chlorite solutions. After drying, the chemically treated bamboo inner slivers showed improved bending properties and tensile strength compared to untreated ones. In addition, the three types of slivers exhibited distinct curling behaviors: untreated slivers curled most longitudinally, sodium hydroxide-treated bamboo slivers showed the most pronounced curling in the transverse direction; the longitudinal bending curvature of slivers treated with acidified sodium chlorite fell between the two extremes, while transverse curling was minimal. Results indicated that the 5 wt% sodium hydroxide treatment removed lignin more effectively than the 4 wt% acidified sodium chlorite solution. Sodium hydroxide treatment caused collapse of parenchyma and pith ring cells, whereas acidified sodium chlorite largely preserved cellular structure. Therefore, the density and strength of bamboo slivers treated with sodium hydroxide show more significant improvement. The differences in curling behavior are closely associated with the extent of bamboo inner sliver lignin and hemicellulose removal and the corresponding microstructural changes. [ABSTRACT FROM AUTHOR]
Copyright of Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood is the property of De Gruyter and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 193391701
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Curling behavior and mechanism of bamboo inner slivers induced by delignification treatment.
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  Data: <searchLink fieldCode="AR" term="%22Yin%2C+Haowei%22">Yin, Haowei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Huanrong%22">Liu, Huanrong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fang%2C+Changhua%22">Fang, Changhua</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22An%2C+Xin%22">An, Xin</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> ax@caf.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuehua%22">Wang, Xuehua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangxuehua@njfu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Holzforschung%3A+International+Journal+of+the+Biology%2C+Chemistry%2C+Physics%2C+%26+Technology+of+Wood%22">Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood</searchLink>. May2026, Vol. 80 Issue 5, p387-399. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Delignification%22">Delignification</searchLink><br /><searchLink fieldCode="DE" term="%22Curvature%22">Curvature</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+hydroxide%22">Sodium hydroxide</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Bamboo%22">Bamboo</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Bamboo inner materials are often discarded due to their loose tissue structure and low mechanical strength. Delignification can effectively enhance material performance. To improve mechanical properties and increase utilization, this study respectively treated bamboo inner slivers with delignification using sodium hydroxide and acidified sodium chlorite solutions. After drying, the chemically treated bamboo inner slivers showed improved bending properties and tensile strength compared to untreated ones. In addition, the three types of slivers exhibited distinct curling behaviors: untreated slivers curled most longitudinally, sodium hydroxide-treated bamboo slivers showed the most pronounced curling in the transverse direction; the longitudinal bending curvature of slivers treated with acidified sodium chlorite fell between the two extremes, while transverse curling was minimal. Results indicated that the 5 wt% sodium hydroxide treatment removed lignin more effectively than the 4 wt% acidified sodium chlorite solution. Sodium hydroxide treatment caused collapse of parenchyma and pith ring cells, whereas acidified sodium chlorite largely preserved cellular structure. Therefore, the density and strength of bamboo slivers treated with sodium hydroxide show more significant improvement. The differences in curling behavior are closely associated with the extent of bamboo inner sliver lignin and hemicellulose removal and the corresponding microstructural changes. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood is the property of De Gruyter and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1515/hf-2025-0144
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 387
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      – SubjectFull: Delignification
        Type: general
      – SubjectFull: Curvature
        Type: general
      – SubjectFull: Sodium hydroxide
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Bamboo
        Type: general
      – SubjectFull: Microstructure
        Type: general
    Titles:
      – TitleFull: Curling behavior and mechanism of bamboo inner slivers induced by delignification treatment.
        Type: main
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          Name:
            NameFull: Yin, Haowei
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            NameFull: Liu, Huanrong
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            NameFull: Fang, Changhua
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            NameFull: An, Xin
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            NameFull: Wang, Xuehua
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 80
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            – TitleFull: Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood
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