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<p>The green fabrication of low-fibrillation and multifunctional regenerated cellulose fibers represents a significant yet challenging research frontier. In this study, a novel cellulose/aromatic polyamide (ArPA) composite fiber system was developed to solve the trade-off between the mechanical properties of lyocell-type fibers and the tendency to fibrillate. The composite fibers were prepared by dry-jet wet spinning after co-dissolving cellulose and ArPA spinning solution with a green solvent 1-butyl-3-methylimidazole chloride/1,3-dimethyl-2-imidazolidinone ([Bmim]Cl/DMI) solvent system. The rheological and molecular dynamics (MD) simulation results confirmed the excellent compatibility between cellulose and ArPA. The composite fiber with a 2% addition ratio of ArPA (C/A2) showed significant performance improvement, with a tensile strength of 1.44 cN/dtex (18.6% higher than that of pure cellulose fiber), a crystallinity index of 64.2%, and a significantly low degree of fibrillation (a fibrillation index below 0.1 even after 90&#xa0;min of sonication). Moreover, C/A2 fiber maintained good dyeability and could be modified with polyhexamethylene guanidine hydrochloride (PHMG) to achieve high antibacterial efficiency. This study provides a green and versatile strategy for overcoming the fibrillation problem in conventional lyocell-type fibers while achieving multifunctionality.</p> Graphical abstract <p></p>

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Aromatic polyamide-reinforced regenerated cellulose fiber with low fibrillation and enhanced mechanical properties

  • 期刊论文

  • 发表日期：

    2026年4月19日

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  • Xin Huang,
  • Ziang Wang,
  • Yakun Zong,
  • Xichao Liang,
  • Yuanzhang Jiang,
  • Junwen Ren,
  • Lin Tan

摘要

The green fabrication of low-fibrillation and multifunctional regenerated cellulose fibers represents a significant yet challenging research frontier. In this study, a novel cellulose/aromatic polyamide (ArPA) composite fiber system was developed to solve the trade-off between the mechanical properties of lyocell-type fibers and the tendency to fibrillate. The composite fibers were prepared by dry-jet wet spinning after co-dissolving cellulose and ArPA spinning solution with a green solvent 1-butyl-3-methylimidazole chloride/1,3-dimethyl-2-imidazolidinone ([Bmim]Cl/DMI) solvent system. The rheological and molecular dynamics (MD) simulation results confirmed the excellent compatibility between cellulose and ArPA. The composite fiber with a 2% addition ratio of ArPA (C/A2) showed significant performance improvement, with a tensile strength of 1.44 cN/dtex (18.6% higher than that of pure cellulose fiber), a crystallinity index of 64.2%, and a significantly low degree of fibrillation (a fibrillation index below 0.1 even after 90 min of sonication). Moreover, C/A2 fiber maintained good dyeability and could be modified with polyhexamethylene guanidine hydrochloride (PHMG) to achieve high antibacterial efficiency. This study provides a green and versatile strategy for overcoming the fibrillation problem in conventional lyocell-type fibers while achieving multifunctionality.

Graphical abstract