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Toward the Optimization of the Optical Behavior of Transparent Wood: Current State of the Art and Perspectives.

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Title: Toward the Optimization of the Optical Behavior of Transparent Wood: Current State of the Art and Perspectives.
Authors: Pugliese, Diego1 (AUTHOR), Malucelli, Giulio2 (AUTHOR) giulio.malucelli@polito.it
Source: Polymers (20734360). Dec2025, Vol. 17 Issue 24, p3276. 42p.
Subjects: Delignification, Refractive index, Optical materials, Polymerization, Light propagation, Anisotropic crystals
Abstract: Transparent wood (TW) is a type of bio-based optical composite that combines wood's hierarchical microstructure with polymers' tailored optical properties to achieve high transmittance and controlled light scattering. TW is developed by removing lignin or modifying lignin chromophores and infiltrating a polymer whose refractive index closely matches that of the delignified wood framework. This review critically examines the parameters governing transparency in millimeter-thick TW, including the influence of wood species, delignification and bleaching strategies, and polymer selection for infiltration and polymerization/curing. The discussion emphasizes the interplay between microstructural anisotropy, refractive index matching, and processing-induced defects, which collectively determine light transmittance and haze. The review summarizes current progress toward achieving glass-like transparency in the millimeter range, highlighting the advances and remaining challenges in optimizing TW for scalable structural and functional applications. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI 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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  Data: Toward the Optimization of the Optical Behavior of Transparent Wood: Current State of the Art and Perspectives.
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  Data: <searchLink fieldCode="AR" term="%22Pugliese%2C+Diego%22">Pugliese, Diego</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Malucelli%2C+Giulio%22">Malucelli, Giulio</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> giulio.malucelli@polito.it</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Dec2025, Vol. 17 Issue 24, p3276. 42p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Delignification%22">Delignification</searchLink><br /><searchLink fieldCode="DE" term="%22Refractive+index%22">Refractive index</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+materials%22">Optical materials</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Light+propagation%22">Light propagation</searchLink><br /><searchLink fieldCode="DE" term="%22Anisotropic+crystals%22">Anisotropic crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Transparent wood (TW) is a type of bio-based optical composite that combines wood's hierarchical microstructure with polymers' tailored optical properties to achieve high transmittance and controlled light scattering. TW is developed by removing lignin or modifying lignin chromophores and infiltrating a polymer whose refractive index closely matches that of the delignified wood framework. This review critically examines the parameters governing transparency in millimeter-thick TW, including the influence of wood species, delignification and bleaching strategies, and polymer selection for infiltration and polymerization/curing. The discussion emphasizes the interplay between microstructural anisotropy, refractive index matching, and processing-induced defects, which collectively determine light transmittance and haze. The review summarizes current progress toward achieving glass-like transparency in the millimeter range, highlighting the advances and remaining challenges in optimizing TW for scalable structural and functional applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI 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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        Value: 10.3390/polym17243276
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      – Code: eng
        Text: English
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        PageCount: 42
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      – SubjectFull: Delignification
        Type: general
      – SubjectFull: Refractive index
        Type: general
      – SubjectFull: Optical materials
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      – SubjectFull: Polymerization
        Type: general
      – SubjectFull: Light propagation
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      – SubjectFull: Anisotropic crystals
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              Text: Dec2025
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