Affiliation:
1. Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical Technology Shenyang 110142 P. R. China
2. Key Laboratory of Bio‐based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin 150040 P. R. China
3. College of Biomass Science and Engineering Sichuan University Chengdu 610065 P. R. China
Abstract
AbstractIonogels, recognized for their flexibility and ionic conductivity, show considerable promise across various applications including electronic skins, biomedical electronics, and smart robotics. However, the majority of ionogels are plagued by suboptimal mechanical strength, a restricted range of operating temperatures, and poor recyclability. Here, an acetone‐stimulated supramolecular reinforcement strategy to develop robust and environmentally tolerant ionogels is introduced. The bio‐based ionogels feature a firm supramolecular architecture formed by the entwining of soybean protein molecules around cellulose macromolecular chains. This coiled design, inspired by cucumber vines, endows the ionogels with remarkable tensile strength (>30 MPa), enables them to withstand temperature above 85 °C with tensile strength over 15 MPa, and maintains notable cold resistance down to −20 °C with tensile strength exceeding 10 MPa. Further, the bio‐based ionogels exhibit excellent recyclability, reprocessing capabilities, shape customizability, good biocompatibility, and full biodegradability. This study provides a valuable strategy for manipulating supramolecular conformation to create robust ionogels that overcome the traditional trade‐offs of high strength and environmental tolerance.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China