Self-Stretchable Fiber Liquid Sensors Made with Bacterial Cellulose/Carbon Nanotubes for Smart Diapers

• DOI: 10.1021/acsami.2c00960
• Publication Date: 2022-04-26T17:00:12Z
• Authors: Qianqian Liang; Dong Zhang; Yuchen Wu; Shiyan Chen; Zhiliang Han; Baoxiu Wang; Huaping Wang
• Keywords: Bacterial Cellulose; Cellulose fiber

Liquid sensors for detecting water and body fluids are crucial in daily usage health monitoring, but it is challenging to combine sensing performance with high tensile deformation multifunctional applications. Here, a substrate-free, self-stretchable bacterial cellulose (BC)/carbon nanotube (CNT) helical fiber liquid sensor was prepared by the solution spinning coiling process using BC as water-sensitive matrix CNTs active materials. The BC/CNT (BCT) has stretch ratio of more than 1000% rapid response current change rate 104% within 1 s, which almost unaffected under washing various stretching or knotting deformations. By combination BCT fiber, we can design smart diapers level detectors, rapidly monitor status level, monitoring result be transferred on time through an alarm device smartphone. In short, scalable continuous preparation will provide capacious platform development wearable applied life (such diapers, detection, etc.).