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The demand for renewable bio-based materials has become urgent and is driving the use of agro-industrial residues as resources for the development of bioproducts. In this context, the present study aims to investigate the propertiesProperties of cellulose fibers extracted from coffee husk parchment (Coffea arabica). Cellulosic pulp was obtained through Kraft pulping, followed by bleaching with acetic acid and hydrogenHydrogen peroxide. The morphological characteristics, crystallinity index, and thermal propertiesProperties of the cellulose fibers were analyzed using electron microscopy, X-ray diffraction, and thermogravimetric analysis. The Kraft processProcess proved effective in removing non-cellulosic compounds and in fiber individualization. Moreover, the fibers exhibited a crystallinity index of ~74%, with a crystallite size of 3.34 nm. The high crystallinity contributed to improved thermal stability, with maximum degradation observed at 348 °C. The results confirm the potential of parchment as a promising source of cellulosic pulp for subsequent production of cellulose nanocrystals (CNCs). This study contributes to the valorization of agricultural by-products, promoting circular economy strategies and the advancement of nanomaterials.

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Valorization of Coffee Husk Parchment as a Sustainable Source of Cellulose Nanocrystals

  • 会议论文

  • 发表日期：

    2026年

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  • Roseméri Barbosa dos Santos da Silva,
  • Henrique Alonso Colorado Lopera,
  • Felipe Perissé Duarte Lopes,
  • Humberto Fantuzzi Neto,
  • Michel Picanço Oliveira

摘要

The demand for renewable bio-based materials has become urgent and is driving the use of agro-industrial residues as resources for the development of bioproducts. In this context, the present study aims to investigate the propertiesProperties of cellulose fibers extracted from coffee husk parchment (Coffea arabica). Cellulosic pulp was obtained through Kraft pulping, followed by bleaching with acetic acid and hydrogenHydrogen peroxide. The morphological characteristics, crystallinity index, and thermal propertiesProperties of the cellulose fibers were analyzed using electron microscopy, X-ray diffraction, and thermogravimetric analysis. The Kraft processProcess proved effective in removing non-cellulosic compounds and in fiber individualization. Moreover, the fibers exhibited a crystallinity index of ~74%, with a crystallite size of 3.34 nm. The high crystallinity contributed to improved thermal stability, with maximum degradation observed at 348 °C. The results confirm the potential of parchment as a promising source of cellulosic pulp for subsequent production of cellulose nanocrystals (CNCs). This study contributes to the valorization of agricultural by-products, promoting circular economy strategies and the advancement of nanomaterials.