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<p>Recovered textile scraps were successfully repurposed into pulp slurry suitable for molded pulp and papermaking applications. The morphological evolution of the textile fibers was assessed across different beating durations, ranging from 30 to 120&#xa0;min. Beating reduced the average fiber length from 1.2 to 0.5&#xa0;mm, increased the fines content from 9.2 to 24.5%, and enhanced fiber fibrillation, as indicated by an increase from 3.0 to 3.7%. Handsheets produced at various beating times exhibited improved mechanical properties with increased refining. The burst index rose from 1.2 to 7.6&#xa0;kPa&#xa0;m<sup>2</sup>/g, and the tear index increased from 6.5 to 21.8&#xa0;mN&#xa0;m<sup>2</sup>/g. However, beyond 90&#xa0;min of beating, mechanical strength declined, attributed to excessive fiber shortening and fines generation. Additionally, dye leaching from the recycled textile fibers was observed during refining, as evidenced by a decrease in the b* value (blueness) from −22.2 to −18.6. To mitigate dye release, pulp and paper dye-fixation agents were applied, successfully reducing white water absorbance at λ = 273&#xa0;nm from 0.64 to 0.10. Finally, the refined pulp was used to produce molded pulp products, demonstrating a potential industrial pathway for textile waste valorization.</p>

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Recycling textile waste through pulp and paper technologies

  • 期刊论文

  • 发表日期：

    2025年6月16日

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  • Eric Desnoes,
  • Merveille Lagloire,
  • Benjamin Arnaud,
  • Pascale Deshaies,
  • Wendy Rodriguez Castellanos,
  • Camille Venne,
  • Anne-Marie Laflamme,
  • Benoit Bideau

摘要

Recovered textile scraps were successfully repurposed into pulp slurry suitable for molded pulp and papermaking applications. The morphological evolution of the textile fibers was assessed across different beating durations, ranging from 30 to 120 min. Beating reduced the average fiber length from 1.2 to 0.5 mm, increased the fines content from 9.2 to 24.5%, and enhanced fiber fibrillation, as indicated by an increase from 3.0 to 3.7%. Handsheets produced at various beating times exhibited improved mechanical properties with increased refining. The burst index rose from 1.2 to 7.6 kPa m2/g, and the tear index increased from 6.5 to 21.8 mN m2/g. However, beyond 90 min of beating, mechanical strength declined, attributed to excessive fiber shortening and fines generation. Additionally, dye leaching from the recycled textile fibers was observed during refining, as evidenced by a decrease in the b* value (blueness) from −22.2 to −18.6. To mitigate dye release, pulp and paper dye-fixation agents were applied, successfully reducing white water absorbance at λ = 273 nm from 0.64 to 0.10. Finally, the refined pulp was used to produce molded pulp products, demonstrating a potential industrial pathway for textile waste valorization.