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<p>Valorization of agro-waste as functional textile raw materials is critical to the circular and resource efficient manufacturing in the textile industries. Agro-residues such as pineapple leaves offer an abundant, low-impact alternative due to their high cellulose content and favorable mechanical characteristics. While most of the previous studies have been done on chemically treated PALF for composite applications, this study explores the spinnability and performance of untreated PALF when blended with cotton and chemically treated jute in a ratio of 50:30:20 using a rotor spinning system. PALF was mechanically extracted, cleaned and mixed with cotton and jute before opening, carding, and rotor spinning. Scanning electron microscopy (SEM) images confirmed heterogeneous fiber packing, surface roughness, and friction-based interlocking that contributed to yarn cohesion. FTIR analysis showed the characteristic lignocellulosic absorption bands which confirmed the preservation of cellulose dominated chemical structures in the cotton-PALF-jute blended yarn after rotor spinning. Yarn mass irregularity (U% and CVm%), imperfection index (thin, thick, and nep faults), and hairiness were also calculated under standardized testing conditions to analyze structural uniformity and surface characteristics of the produced yarn. The linear density of the blended Z-twisted yarn was 5 Ne and 520 Turns Per Meter (TPM), unevenness% (U%) was 18.62, coefficient of variation of mass% (CVm%) was 23.83, thin places were 970/km, thick places were 1710/km, neps were 750/km, and hairiness index was 7.44. Mechanical testing revealed a breaking tenacity of 22.6 cN/tex, tensile strength of 11.10&#xa0;N and elongation of 5.66%. These results indicate that untreated pineapple leaf based agro-wastes can be transformed into rotor spun functional yarns that can afford a fast route towards incorporating agricultural residues into conventional short staple spinning. Overall, the results determine the technical feasibility of converting pineapple leaf agro-waste into functional yarns, supporting material circularity by lowering the dependence on virgin resources.</p>

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Circular Valorization of Pineapple Leaf Agro-Waste into Sustainable Yarn for a Closed-Loop Textile System

  • 期刊论文

  • 发表日期：

    2026年3月31日

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  • Khush Mohammad,
  • Md. Farhad Hossain,
  • Md Mustafizur Rahman,
  • Mahamud Hasan,
  • Jannatul Bake Molla,
  • Md Zahid Hasan,
  • Haroon A. M. Saeed

摘要

Valorization of agro-waste as functional textile raw materials is critical to the circular and resource efficient manufacturing in the textile industries. Agro-residues such as pineapple leaves offer an abundant, low-impact alternative due to their high cellulose content and favorable mechanical characteristics. While most of the previous studies have been done on chemically treated PALF for composite applications, this study explores the spinnability and performance of untreated PALF when blended with cotton and chemically treated jute in a ratio of 50:30:20 using a rotor spinning system. PALF was mechanically extracted, cleaned and mixed with cotton and jute before opening, carding, and rotor spinning. Scanning electron microscopy (SEM) images confirmed heterogeneous fiber packing, surface roughness, and friction-based interlocking that contributed to yarn cohesion. FTIR analysis showed the characteristic lignocellulosic absorption bands which confirmed the preservation of cellulose dominated chemical structures in the cotton-PALF-jute blended yarn after rotor spinning. Yarn mass irregularity (U% and CVm%), imperfection index (thin, thick, and nep faults), and hairiness were also calculated under standardized testing conditions to analyze structural uniformity and surface characteristics of the produced yarn. The linear density of the blended Z-twisted yarn was 5 Ne and 520 Turns Per Meter (TPM), unevenness% (U%) was 18.62, coefficient of variation of mass% (CVm%) was 23.83, thin places were 970/km, thick places were 1710/km, neps were 750/km, and hairiness index was 7.44. Mechanical testing revealed a breaking tenacity of 22.6 cN/tex, tensile strength of 11.10 N and elongation of 5.66%. These results indicate that untreated pineapple leaf based agro-wastes can be transformed into rotor spun functional yarns that can afford a fast route towards incorporating agricultural residues into conventional short staple spinning. Overall, the results determine the technical feasibility of converting pineapple leaf agro-waste into functional yarns, supporting material circularity by lowering the dependence on virgin resources.