Fermentation-Inspired Gelatin Hydrogels with a Controllable Supermacroporous Structure and High Ductility for Wearable Flexible Sensors

• DOI: 10.1021/acsami.2c02524
• Publication Date: 2022-05-20T04:46:16Z
• Authors: Jing Cheng; Lijun You; Xixi Cai; Jinhao Yang; Huimin Chen; Xinming Shi; Jiajie Wu; Jianhua Wang; Caihua Xiong; Shaoyun Wang
• Keywords: Gelatin

Supermacroporous hydrogels have attracted wide concern due to their comfort and breathability in wearable health-monitoring applications. Size controllable supermacroporous structure excellent mechanical properties are the most important for its application. However, they normally fabricated by cryogelation method, which is difficult control pore size maintain flexibility. Here, yeast fermentation-inspired gelatin with a were first time. The can be controlled adjusting content of glucose yeast, ratio fermentation time, during fermentation. demonstrated range from 100 400 μm rapid swelling characteristics. maintained soaking ammonium sulfate solution 12 h, showing maximum tensile compressive strains over 300 99%, respectively. This novel approach easily applied preparation high ductility under mild conditions. Furthermore, conductive combined structures polyaniline reduced oxidized graphene, silver nanowires prepared as flexible sensors. obtained sensors well-distributed porosity, breathability, flexibility, also conductivity 2.4 S m