Electrospun Multifunctional Fibrous Membranes With Temperature-Controlled, Electromagnetic Shielding, and Waterproof Properties

This study developed multifunctional fibrous membranes for wearable textiles. Using coaxial electrospinning, octadecane (Oct) was encapsulated within polylactic acid (PLA) to form core-shell PLA@Oct (P 1 ) fibers for thermal regulation. MXene was then sprayed onto P 1 to create a conductive layer (P 1 M) for electromagnetic interference (EMI) shielding. Finally, a waterproof layer of PLA/polyvinylidene fluoride (PVDF) blended with fluorinated SiO 2 was electrospun atop P 1 M, resulting in the multilayer membrane P 1 MP 2 . The optimized membrane demonstrated a high latent heat of 111.73 J/g, an effective EMI shielding effectiveness of 32.68 dB in the X-band, and a hydrophobic contact angle of 136.91°. This integration of temperature management, EMI shielding, and waterproof showcases certain potential for advanced wearable applications.