Scholarlink

<p>Fibreboard plays a central role in the global wood products industry, converting large volumes of residues into uniform, high-value panels. Despite its reputation as a sustainable material, commercial fibreboards rely on petrochemical adhesives—such as urea- and phenol-formaldehyde resins—that emit volatile organic compounds and undermine the material’s green credentials. This study presents a bio-based, additive-free alternative to conventional fibreboard, manufactured using the ionoSolv process. In this one-pot route, lignin is extracted, modified to act as a dry-form binder phase, precipitated onto cellulose fibres, and hot-pressed without any synthetic resin. This work evaluates the biocomposite’s mechanical, physical, and optical properties, and develops a predictive model linking production conditions to performance. The material achieves tensile strengths up to 30&#xa0;MPa and Young’s moduli up to 14 GPa—comparable to or exceeding MDF in tensile strength, and surpassing all conventional fibreboards in stiffness—with densities similar to tempered hardboard. At thicknesses below 300&#xa0;μm, the material blocks over 99.7% of UV radiation, and under backlighting displays vivid colour shifts from black or brown to orange, pink, or purple—depending on process conditions—suggesting potential for interior design applications combining dynamic visual effects with mechanical performance. The model enables tailoring of these properties to specific use cases by tuning extraction and pressing conditions. These findings demonstrate that wood powder can be transformed into mechanically competitive, optically dynamic biocomposites using a process free of fossil-derived binders, suggesting a route towards valorising industrial wood residues and reducing reliance on petrochemical adhesives in the engineered wood sector.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Tuneable material properties of an ionosolv-derived all-wood biocomposite

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月4日

查看全文
  • Mina Pourkhatoun,
  • Koon-Yang Lee,
  • Meredith Rose Barr

摘要

Fibreboard plays a central role in the global wood products industry, converting large volumes of residues into uniform, high-value panels. Despite its reputation as a sustainable material, commercial fibreboards rely on petrochemical adhesives—such as urea- and phenol-formaldehyde resins—that emit volatile organic compounds and undermine the material’s green credentials. This study presents a bio-based, additive-free alternative to conventional fibreboard, manufactured using the ionoSolv process. In this one-pot route, lignin is extracted, modified to act as a dry-form binder phase, precipitated onto cellulose fibres, and hot-pressed without any synthetic resin. This work evaluates the biocomposite’s mechanical, physical, and optical properties, and develops a predictive model linking production conditions to performance. The material achieves tensile strengths up to 30 MPa and Young’s moduli up to 14 GPa—comparable to or exceeding MDF in tensile strength, and surpassing all conventional fibreboards in stiffness—with densities similar to tempered hardboard. At thicknesses below 300 μm, the material blocks over 99.7% of UV radiation, and under backlighting displays vivid colour shifts from black or brown to orange, pink, or purple—depending on process conditions—suggesting potential for interior design applications combining dynamic visual effects with mechanical performance. The model enables tailoring of these properties to specific use cases by tuning extraction and pressing conditions. These findings demonstrate that wood powder can be transformed into mechanically competitive, optically dynamic biocomposites using a process free of fossil-derived binders, suggesting a route towards valorising industrial wood residues and reducing reliance on petrochemical adhesives in the engineered wood sector.