Biosourced Self-Healable Eutectogels for Flexible Sensors

With the continuous advances in technology and the persistent necessity of a recycling economy, biosourced materials have drawn much attention. Here, one kind of eutectogel with high mechanical strength, antidrying performance, and good conductivity was fabricated through a facile solvent replacement strategy. Based on double reversible physical cross-linking networks of the gel and the sol–gel transformation ability of gelatin, the eutectogel is capable of self-healing ability. By altering the weight ratio of gelatin/natural rubber (G/N) and immersion time in DES, the mechanical strength and toughness could be effectively regulated. Combining the antifatigue performance, lower freezing point, and stable gauge factor, the eutectogel may not only broaden the application fields of gels but also be used in flexible sensors and wearable electronic devices to satisfy the demands in extreme environments.