A Cellulose Salt Gel with Mechanical Transformation and Thermal Control

• DOI: 10.1002/adfm.202400203
• Publication Date: 2024-03-08T03:45:27Z
• Authors: Yifan Liu; Jiazuo Zhou; Yudong Li; Xiaohan Sun; Ziyao Wang; Haiyue Yang; Chengyu Wang
• Keywords: 01 natural sciences; 0104 chemical sciences

Abstract Gels as compelling soft material shows its promising versatility in actuators, electronics, and biomedical sensors. However, most gel materials are too rigid to cope with long‐term changing scenarios specific needs. Inspired by the switchable behavior of bio‐behavior muscle, study reports a thermodynamically controllable stiffness‐transformative cellulose‐salt simple thermal mixing hydrous salt, cellulose nanofiber, polyacrylamide. The achieved cellulosic dynamic microstructure presents an amazing stiffness switchability between crystalline state melted states 32.38 0.02 MPa, well regulable light transmittance 41.59% 93.43%. In addition, this has excellent behavior. That is, controlling crystallization process, displays start‐stop releasing‐energy behaviors on demand. Enabled these outstanding properties, further demonstrates application soft‐rigid coupling thermoelectric device, showing broader implications for wearable electronics aiming at on‐demand work.