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<p>This study presents a sustainable and integrative approach for the valorization of agroindustrial residues—sorghum stover, corn stover, and sugarcane bagasse—through the production of cellulosic fibers and cellulose nanofibers (CNFs) using and integrated low-impact strategies. An integrated route combining organosolv pulping, elemental chlorine-free bleaching, and TEMPO-mediated oxidation was employed to convert abundant agricultural waste into high-value bio-based materials. Efficient removal of lignin and hemicellulose was confirmed by comprehensive physicochemical characterization. The resulting TEMPO-oxidized CNFs exhibited high surface charge, colloidal stability, and distinct structural features depending on the biomass source. Sorghum stover yielded CNFs with superior fibrillar uniformity, high crystallinity (81%), and enhanced dispersion, while corn stover provided the highest cellulose yield but showed lower thermal stability. Sugarcane bagasse produced CNFs with a higher degree of polymerization and more gradual thermal degradation, indicating a compact and robust structure. These findings demonstrate that underutilized agricultural residues can be effectively transformed into functional nanocellulose through low-impact processes, supporting circular economy strategies and offering sustainable alternatives for polymer-based materials, biocomposites, packaging, and filtration applications.</p>

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Valorization of agricultural waste into organosolv fibers and nanofibers for sustainable polymeric materials

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月12日

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  • Anahí Arreaga Cancino,
  • Marianelly Esquivel Alfaro,
  • Aracely López Grijalva,
  • Orlando Hernández-Cristóbal,
  • Orlando J. Rojas,
  • Belkis Sulbarán-Rangel

摘要

This study presents a sustainable and integrative approach for the valorization of agroindustrial residues—sorghum stover, corn stover, and sugarcane bagasse—through the production of cellulosic fibers and cellulose nanofibers (CNFs) using and integrated low-impact strategies. An integrated route combining organosolv pulping, elemental chlorine-free bleaching, and TEMPO-mediated oxidation was employed to convert abundant agricultural waste into high-value bio-based materials. Efficient removal of lignin and hemicellulose was confirmed by comprehensive physicochemical characterization. The resulting TEMPO-oxidized CNFs exhibited high surface charge, colloidal stability, and distinct structural features depending on the biomass source. Sorghum stover yielded CNFs with superior fibrillar uniformity, high crystallinity (81%), and enhanced dispersion, while corn stover provided the highest cellulose yield but showed lower thermal stability. Sugarcane bagasse produced CNFs with a higher degree of polymerization and more gradual thermal degradation, indicating a compact and robust structure. These findings demonstrate that underutilized agricultural residues can be effectively transformed into functional nanocellulose through low-impact processes, supporting circular economy strategies and offering sustainable alternatives for polymer-based materials, biocomposites, packaging, and filtration applications.