Multifunctional Wearable Device Based on an Antibacterial and Hydrophobic Silver Nanoparticles/Ti3C2T x MXene/Thermoplastic Polyurethane Fibrous Membrane for Electromagnetic Shielding and Strain Sensing

Although flexible wearable devices have received wide attention in various application scenarios, it is still a challenge to integrate multiple functions on a single flexible wearable equipment. Here, an electrospun thermoplastic polyurethane (TPU) fibrous membrane is selected as the flexible substrate, and Ti3C2T x MXene is modified on the fibrous membrane by ultrasonic coating, followed by the loading of silver nanoparticles (AgNPs) by chemical deposition to successfully prepare a AgNPs/Ti3C2T x /TPU fibrous membrane. The electromagnetic interference (EMI) shielding performance of the fibrous membrane is up to 87.31 dB in a microwave frequency range of 8–12 GHz. As a strain sensor, the AgNPs/Ti3C2T x /TPU fibrous membrane has a strain of 90%, a low detection limit of 0.5%, and a sensitivity up to a gauge factor (GF) of 157. The AgNPs/Ti3C2T x /TPU fibrous membrane also has antibacterial and hydrophobic properties, showing the potential for application in complex environments.