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Effect of Alkaline Treatment on the Physical, Chemical, and Mechanical Properties of Coconut Palm Nucifera Rachis Fibres.

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Title: Effect of Alkaline Treatment on the Physical, Chemical, and Mechanical Properties of Coconut Palm Nucifera Rachis Fibres.
Authors: Atangana, Gallus Eric1,2 (AUTHOR) gallusericatangana@yahoo.fr, Tchotang, Theodore1,2 (AUTHOR), Wedaïna, Achille GnassirI3 (AUTHOR), Olembe, Yves Roland1 (AUTHOR), Djaligue, Aminou1 (AUTHOR), Mahondé, Ndoudja1 (AUTHOR)
Source: Journal of Natural Fibers. Dec2025, Vol. 22 Issue 1, p1-24. 24p.
Subjects: Mechanical behavior of materials, Civil engineering, Plant fibers, Alkalinization, Waterproofing, Properties of matter, Chemical properties, Biodegradable materials
Abstract (English): In this study, an alkaline treatment of raw fibers obtained from the rachis of the coconut palm nucifera (FRC) has been performed, with the aim of using the derived composites as cladding elements in the field of civil engineering. These raw fibers are structurally fragile, which limits their use. Fibers obtained by water retting have been treated with different concentrations of 1%, 3%, and 5% NaOH. The crystallographic structure and chemical composition are determined using X-ray diffraction techniques. The average values obtained for lignin, hemicellulose, and cellulose read 33.46%, 31.85%, and 33.30%, respectively, for the raw fiber (FRC) then 21.66%, 29.1%, and 49.04% for the treated fiber (FRC3/120). The density of the fiber is between 0.36 and 1.09. Analysis of mechanical properties shows their significant improvement with alkaline treatment. The Young's modulus and the ultimate stress read, respectively, 15,144.30 Mpa and 927.06 Mpa for both samples. Those results make the treated fiber a good candidate for bio composite used in wet environment because of its strength and resistance to water absorption. Further studies can explore the production of composite reinforced with treated fibers, and then evaluate their efficiency in maritime environment. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 在这项研究中，对从椰子树（FRC）轴上获得的原纤维进行了碱性处理，目的是将衍生的复合材料用作土木工程领域的包覆元件. 这些原纤维在结构上很脆弱，这限制了它们的使用. 通过水脱胶获得的纤维用不同浓度的1%、3%和5%的NaOH处理. 使用X射线衍射技术确定晶体结构和化学成分. 木质素、半纤维素和纤维素的平均值分别为原料纤维（FRC）的33.46%、31.85%和33.30%，处理纤维（FRC3/120）的21.66%、29.1%和49.04%. 纤维的密度在0.36到1.09之间。机械性能分析表明，经过碱性处理后，它们有了显著改善. 两个样品的杨氏模量和极限应力分别为15144.30 Mpa和927.06 Mpa. 这些结果使经处理的纤维因其强度和抗吸水性而成为潮湿环境中使用的生物复合材料的良好候选者. 进一步的研究可以探索用处理过的纤维增强复合材料的生产，然后评估它们在海洋环境中的效率. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd 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.)
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  Label: Title
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  Data: Effect of Alkaline Treatment on the Physical, Chemical, and Mechanical Properties of Coconut Palm Nucifera Rachis Fibres.
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  Data: <searchLink fieldCode="AR" term="%22Atangana%2C+Gallus+Eric%22">Atangana, Gallus Eric</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> gallusericatangana@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Tchotang%2C+Theodore%22">Tchotang, Theodore</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wedaïna%2C+Achille+GnassirI%22">Wedaïna, Achille GnassirI</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Olembe%2C+Yves+Roland%22">Olembe, Yves Roland</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Djaligue%2C+Aminou%22">Djaligue, Aminou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mahondé%2C+Ndoudja%22">Mahondé, Ndoudja</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Natural+Fibers%22">Journal of Natural Fibers</searchLink>. Dec2025, Vol. 22 Issue 1, p1-24. 24p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Civil+engineering%22">Civil engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+fibers%22">Plant fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Alkalinization%22">Alkalinization</searchLink><br /><searchLink fieldCode="DE" term="%22Waterproofing%22">Waterproofing</searchLink><br /><searchLink fieldCode="DE" term="%22Properties+of+matter%22">Properties of matter</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+properties%22">Chemical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Biodegradable+materials%22">Biodegradable materials</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: In this study, an alkaline treatment of raw fibers obtained from the rachis of the coconut palm nucifera (FRC) has been performed, with the aim of using the derived composites as cladding elements in the field of civil engineering. These raw fibers are structurally fragile, which limits their use. Fibers obtained by water retting have been treated with different concentrations of 1%, 3%, and 5% NaOH. The crystallographic structure and chemical composition are determined using X-ray diffraction techniques. The average values obtained for lignin, hemicellulose, and cellulose read 33.46%, 31.85%, and 33.30%, respectively, for the raw fiber (FRC) then 21.66%, 29.1%, and 49.04% for the treated fiber (FRC3/120). The density of the fiber is between 0.36 and 1.09. Analysis of mechanical properties shows their significant improvement with alkaline treatment. The Young's modulus and the ultimate stress read, respectively, 15,144.30 Mpa and 927.06 Mpa for both samples. Those results make the treated fiber a good candidate for bio composite used in wet environment because of its strength and resistance to water absorption. Further studies can explore the production of composite reinforced with treated fibers, and then evaluate their efficiency in maritime environment. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 在这项研究中，对从椰子树（FRC）轴上获得的原纤维进行了碱性处理，目的是将衍生的复合材料用作土木工程领域的包覆元件. 这些原纤维在结构上很脆弱，这限制了它们的使用. 通过水脱胶获得的纤维用不同浓度的1%、3%和5%的NaOH处理. 使用X射线衍射技术确定晶体结构和化学成分. 木质素、半纤维素和纤维素的平均值分别为原料纤维（FRC）的33.46%、31.85%和33.30%，处理纤维（FRC3/120）的21.66%、29.1%和49.04%. 纤维的密度在0.36到1.09之间。机械性能分析表明，经过碱性处理后，它们有了显著改善. 两个样品的杨氏模量和极限应力分别为15144.30 Mpa和927.06 Mpa. 这些结果使经处理的纤维因其强度和抗吸水性而成为潮湿环境中使用的生物复合材料的良好候选者. 进一步的研究可以探索用处理过的纤维增强复合材料的生产，然后评估它们在海洋环境中的效率. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Natural Fibers is the property of Taylor & Francis Ltd 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/15440478.2024.2449439
    Languages:
      – Code: eng
        Text: English
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        PageCount: 24
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    Subjects:
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Civil engineering
        Type: general
      – SubjectFull: Plant fibers
        Type: general
      – SubjectFull: Alkalinization
        Type: general
      – SubjectFull: Waterproofing
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      – SubjectFull: Properties of matter
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      – SubjectFull: Chemical properties
        Type: general
      – SubjectFull: Biodegradable materials
        Type: general
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      – TitleFull: Effect of Alkaline Treatment on the Physical, Chemical, and Mechanical Properties of Coconut Palm Nucifera Rachis Fibres.
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            NameFull: Atangana, Gallus Eric
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            NameFull: Tchotang, Theodore
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            NameFull: Wedaïna, Achille GnassirI
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            NameFull: Olembe, Yves Roland
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              M: 12
              Text: Dec2025
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              Y: 2025
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