Investigation of Self-Adaptive Breathable Nano-TiO ₂ /PU Membrane with Water Vapor Transmission

Wearable materials with thermal management and self-adaptive breathability have attracted increasing attention. In this study, nano-TiO ₂ /polyurethane (PU) membranes were prepared via casting. Properties of fabricated nano-TiO ₂ / PU membranes were characterized systematically by Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectrometer (FTIR), Thermal Gravity Analysis (TGA), Differential Scanning Calorimetry (DSC), and strength tester. The effects of TiO ₂ content on waterproofness, moisture permeability, and thermal stability of the composite membranes were studied. The experimental results show that with the increase of TiO ₂ content, the thermal stability of the composite membranes increased; waterproofness and moisture permeability performance also improved.