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<p>This study presents a facile and environmentally friendly approach for decorating nylon 6 fabrics with γ-FeOOH/γ-Fe₂O₃ nanospindles through ozone-assisted surface treatment. Ozone pretreatment modified the surface chemistry of nylon 6 by introducing oxygen-containing functional groups. These modifications enhanced the adsorption of energy and binding affinity of iron-based nanoparticles, leading to uniform nanospindle deposition. The positions of nylon 6 crystal phases remained unchanged after ozone treatment, as well as after subsequent decoration with γ-FeOOH/γ-Fe₂O₃ nanospindle coating. Thermal stability studies indicated increased char content and higher degradation temperatures for ozone-pretreated samples, highlighting improved thermal resistance. According to the reflectance spectra of γ-FeOOH/γ-Fe₂O₃ nanospindles coated nylon 6 fabrics, UV-blocking capabilities were enhanced. Electromagnetic reflection loss in the 8000–12000&#xa0;MHz range were reduced for ozone-treated samples. The combination of ozone oxidation and ferric chloride/sodium hydroxide treatment not only improved nanospindle adherence but also imparted multifunctional properties such as UV protection, thermal stability, and EM attenuation. These findings suggest that ozone-assisted surface engineering offers a promising route for functionalizing polymeric textiles with iron oxide nanostructures for advanced applications.</p>

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Ozone-assisted γ-FeOOH/γ-Fe₂O₃ nanospindle coated nylon 6 fabrics with improved thermal stability, UV blocking and electromagnetic shielding properties

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Mazeyar Parvinzadeh Gashti,
  • Alireza Pournaserani,
  • Esfandiar Pakdel,
  • Mehran Abbaszadeh Amirdehi,
  • Mohammad Pousti,
  • Alessandro Francisco Martins

摘要

This study presents a facile and environmentally friendly approach for decorating nylon 6 fabrics with γ-FeOOH/γ-Fe₂O₃ nanospindles through ozone-assisted surface treatment. Ozone pretreatment modified the surface chemistry of nylon 6 by introducing oxygen-containing functional groups. These modifications enhanced the adsorption of energy and binding affinity of iron-based nanoparticles, leading to uniform nanospindle deposition. The positions of nylon 6 crystal phases remained unchanged after ozone treatment, as well as after subsequent decoration with γ-FeOOH/γ-Fe₂O₃ nanospindle coating. Thermal stability studies indicated increased char content and higher degradation temperatures for ozone-pretreated samples, highlighting improved thermal resistance. According to the reflectance spectra of γ-FeOOH/γ-Fe₂O₃ nanospindles coated nylon 6 fabrics, UV-blocking capabilities were enhanced. Electromagnetic reflection loss in the 8000–12000 MHz range were reduced for ozone-treated samples. The combination of ozone oxidation and ferric chloride/sodium hydroxide treatment not only improved nanospindle adherence but also imparted multifunctional properties such as UV protection, thermal stability, and EM attenuation. These findings suggest that ozone-assisted surface engineering offers a promising route for functionalizing polymeric textiles with iron oxide nanostructures for advanced applications.