Multi‐Structured Nanofibers for Advanced Multifunctional Protective Fabrics via Coaxial Electrospinning

ABSTRACT To address the increasingly diverse demands in modern society, it is essential to develop multifunctional textiles that possess both thermoregulation and UV‐resistant properties. This study integrates coaxial and uniaxial electrospinning techniques to create multifunctional phase change nanofibers (PCNF) that exhibit high levels of hydrophobicity, ultraviolet (UV) resistance, and thermoregulation. During the coaxial electrospinning process, the thermal regulation of the nanofiber membrane is enhanced by incorporating octadecane into the core layer, resulting in a latent heat value of 82.47 J/g. Adding TiO 2 to the sheath layer significantly enhances the nanofibers' UV resistance, achieving a UV protection factor of 200.5. Furthermore, the inclusion of pearl‐like microspheres through uniaxial electrospinning significantly boosts the hydrophobicity of the PCNF, resulting in a water contact angle (WCA) of 148° and excellent stain‐resistant characteristics. This multifunctional composite membrane thus offers a highly promising solution for both outdoor protective applications and flexible wearable devices.