We develop smart fabrics by electrospinning crystallinity-modified self-healing materials, which are facilitated by the reversible physical crosslinking between poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and ionic liquid. The fiber morphology can be maintained without losing the fibrous structure. The fabrics can achieve the healing effects without the need of seaming or any adhesive. The fabrics are waterproof and breathable. By printing electrically conductive channels using ionic liquid, capacitive pressure sensors and resistive tensile sensor arrays are fabricated.

y adjusting the crystallinity of the self-healing polymer materials, fibers with healing ability can be produced. The fabric can maintain the fibrous structure over time. When healing, additional agents are not needed. The manufacturing processes are simple and facile for large scale production. The fabricated electronic skins are not only elastic, conductive, capable of sensing pressure and tension but also air permeable, which are very suitable as the materials for the next generation of wearable devices.

Smart clothing has been estimated to reach a market of 6 billion by 2027. To develop advanced materials for smart clothing, we invent functional fibers with healing capability by controlling the interactions between polymers and ionic liquids. The fibers are waterproof, breathable, and healable. The fabrication process is simple and low cost, which is very suitable for industrial production. By combining current polymer synthesis and textile manufacturing technology, the fibers can be applied to advanced smart wearable devices, such as e-textiles and bio-sensors.

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