Green wearable electronics are attracting increasing attention to eliminate harmful byproducts generated by traditional devices. Although various degradable materials have been explored for green wearable electronics, the development of degradable elastomers with integrated characteristics of low modulus, self-adhesion, high resilient, and low hysteresis remains challenging. In this work, a degradable elastomer poly­(1,8-octanediol-co-citrate-co-caprolactone) (POCL) is reported, in which a loosely cross-linked network contains plenty of entangled flexible chains. The coexistence of covalent cross-links and entanglements of long polymer chains endows the elastomer with good resilience and low hysteresis, in addition to low modulus and self-adhesion. Taking advantage of the unique mechanical properties, epidermal strain sensors based on the POCL elastomer were prepared, which exhibited good adhesion to human skin, high sensitivity, high response rate, and excellent fatigue resistance. We also fabricated stretchable electroluminescent devices using this degradable elastomer and demonstrated the recyclability of the nondegradable materials in the electronic device.

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Intelligent textiles capable of working in the harsh conditions of extremely high temperatures have potential applications in aerospace, firefighting, the petroleum industry, etc. Current high-temperature-resistant electronics are usually based on silicon, silicon carbide, and ceramics, which usually are rigid and have a complicated preparation process. Fabrication of intelligent textiles that can withstand high temperatures remains challenging. In this work, we printed multiwall carbon nanotube (MWCNT)-based temperature and bending sensors on quartz fabrics to fabricate high-temperature-resistant intelligent textiles. We measured in situ the high-temperature electrical conductivities of printed MWCNTs traces from 30 to 900 °C. Temperature sensors with a negative temperature coefficient of resistance (TCR) of −1.18 × 10–3/°C in the temperature range of 30 to 300 °C were reported. Additionally, high-temperature-resistant bending sensors were demonstrated by printing ultrathin networks of MWCNTs on quartz fabrics. The sensors reserved good sensitivity and outstanding robustness after calcination at 600 °C. This work provides a simple, facile, and inexpensive method for fabricating high-temperature-resistant intelligent textiles.