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

ABSTRACT 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.