摘要
Conventional conductive hydrogels face persistent sustainability challenges including energy-intensive fabrication processes, poor subzero temperature tolerance, and rapid dehydration under ambient conditions, contributing to electronic waste accumulation. To address these limitations, we developed an eco-friendly CaTPD hydrogel through rapid room-temperature polymerization initiated by a tannic acid-Ca 2+ complex, eliminating external energy requirements. The synthesis incorporates renewable biomass resources - dialdehyde cellulose derived from sustainable cellulose sources and plant-derived tannic acid - aligning with green chemistry principles. Structural characterization confirmed the formation of a porous network with coordinated complexes, yielding exceptional mechanical properties including 153 kPa tensile strength, 1423.1% fracture elongation, and 988.9 kJ/m 3 toughness. The incorporated calcium chloride imparted remarkable environmental stability, maintaining complete flexibility at −80 °C and preserving 81.5% of initial mass after 15 days at ambient conditions. The hydrogel demonstrated repeatable adhesion to diverse substrates (up to 32.3 kPa to wood) through multiple interfacial interactions. As a strain sensor, it achieved broad detection range (0–400% strain) with tunable sensitivity (gauge factor 1.63–16.87) and maintained signal stability over 3000 cycles. Practical applications were demonstrated through reliable monitoring of human motions ranging from large-scale joint movements to subtle swallowing actions. This work establishes a sustainable paradigm for flexible electronics by integrating biomass-derived materials with energy-efficient manufacturing, offering a viable solution to reduce energy consumption and electronic waste in sensor production while maintaining high performance under extreme conditions, ultimately contributing to cleaner production in the electronics industry.
危险品化学品经营许可证（带存储）