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<p>Although antibacterial Lyocell has been extensively studied, research on quaternary phosphonium salt (QPS)-modified Lyocell fibers (QLF) remains insufficient. In this work, durable antibacterial Lyocell fibers were developed by synthesizing QPS antibacterial agents. QPS was synthesized via a one-pot reaction, and QLF was prepared using dry-jet wet spinning technology. The thermal stability and physicochemical properties of QPS were investigated. The results showed that QPS was successfully incorporated into Lyocell fibers through physical blending and that QLF was prepared using a 0.5% QPS solution. The addition of QPS did not affect the viscosity or stability of the Lyocell fiber spinning solution. Even after 50 washing cycles, QLF maintained antibacterial efficiencies of 99% against <i>E. coli</i> and <i>S. aureus</i>, and 90% against <i>C. albicans</i>, meeting AAA antibacterial standards. This work successfully developed durable antibacterial Lyocell fibers using a simple and cost-effective method.</p>

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Durable Antibacterial Lyocell Fiber Modified with Trialkyl (2,3-dihydroxypropyl) Phosphonium Salts

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Jun-Hong Leng,
  • Mei-Yu Ci,
  • Jiao-Jiao Ji,
  • Jin-Zhi Kuang,
  • Lin Zhang

摘要

Although antibacterial Lyocell has been extensively studied, research on quaternary phosphonium salt (QPS)-modified Lyocell fibers (QLF) remains insufficient. In this work, durable antibacterial Lyocell fibers were developed by synthesizing QPS antibacterial agents. QPS was synthesized via a one-pot reaction, and QLF was prepared using dry-jet wet spinning technology. The thermal stability and physicochemical properties of QPS were investigated. The results showed that QPS was successfully incorporated into Lyocell fibers through physical blending and that QLF was prepared using a 0.5% QPS solution. The addition of QPS did not affect the viscosity or stability of the Lyocell fiber spinning solution. Even after 50 washing cycles, QLF maintained antibacterial efficiencies of 99% against E. coli and S. aureus, and 90% against C. albicans, meeting AAA antibacterial standards. This work successfully developed durable antibacterial Lyocell fibers using a simple and cost-effective method.