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<p>Hierarchically structured synthetic textiles incorporating pores or nanoparticles have demonstrated considerable promise for daytime radiative cooling. However, their widespread adoption is constrained by substantial risks to environmental and human health, including microplastic shedding and nanoparticle toxicity. Here we report an all-silk nanotextile (SilkNT) that delivers high-performance radiative cooling while remaining entirely free of synthetic polymers and toxic additives. Fabricated by wrapping silk nanofibres around silk yarns using a Fermat-spiral twisting technique, SilkNT leverages hierarchical architecture and inherent optical properties of the material to achieve a remarkable solar reflectance of 94.8% and a reduced UV absorption of 8.19%. Under practical applications, skin covered by SilkNT exhibits a 4.3 °C lower temperature than that covered with conventional silk fabric. Comprehensive experimental characterizations and life cycle assessment confirm the material’s exceptional biodegradability, recyclability, biocompatibility and reduced environmental impact. This work establishes a sustainable engineering paradigm for next-generation high-performance cooling textiles with a minimal ecological footprint.</p>

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Sustainable all-silk textiles for personal thermal management

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Xun-En Wu,
  • Yida Wang,
  • Shuo Li,
  • Yong Zhang,
  • Haojie Lu,
  • Lin Zhu,
  • Muqiang Jian,
  • Meihui Jiang,
  • Mengjia Zhu,
  • Mei Zou,
  • Huarun Liang,
  • Yaoyao Zhou,
  • Peng Bi,
  • Xiaoping Liang,
  • Renchuan You,
  • Wenshuai Chen,
  • Yingying Zhang

摘要

Hierarchically structured synthetic textiles incorporating pores or nanoparticles have demonstrated considerable promise for daytime radiative cooling. However, their widespread adoption is constrained by substantial risks to environmental and human health, including microplastic shedding and nanoparticle toxicity. Here we report an all-silk nanotextile (SilkNT) that delivers high-performance radiative cooling while remaining entirely free of synthetic polymers and toxic additives. Fabricated by wrapping silk nanofibres around silk yarns using a Fermat-spiral twisting technique, SilkNT leverages hierarchical architecture and inherent optical properties of the material to achieve a remarkable solar reflectance of 94.8% and a reduced UV absorption of 8.19%. Under practical applications, skin covered by SilkNT exhibits a 4.3 °C lower temperature than that covered with conventional silk fabric. Comprehensive experimental characterizations and life cycle assessment confirm the material’s exceptional biodegradability, recyclability, biocompatibility and reduced environmental impact. This work establishes a sustainable engineering paradigm for next-generation high-performance cooling textiles with a minimal ecological footprint.