Singh Manisha, Solic Ivan, Steele Terry W J
NTU-Northwestern Institute for Nanomedicine (NNIN), Interdisciplinary Graduate School (IGS), Nanyang Technological University (NTU), Singapore 637553, Singapore.
School of Materials Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore 639798, Singapore.
ACS Macro Lett. 2021 Nov 16;10(11):1353-1358. doi: 10.1021/acsmacrolett.1c00559. Epub 2021 Oct 15.
Conductive hydrogels are rapidly rising as sensing materials for bioelectronics applications, but lack mechanical and adhesion strength due to their excess water content. We propose a diazirine-grafted polycaprolactone adhesive (CaproGlu)/carbon nanotubes (CNTs) composite that can provide wet adhesion and strong mechanical properties at the tissue-machine interface. The introduced CNTs not only reinforced the CaproGlu, but also formed electrically conducting pathways. The CaproGlu composites exhibited conductivity of 0.1 S m and a charge storage capacity of 5 μC cm. The resulting composites are biocompatible and can be used as strain sensors to detect mechanical deformations.
导电水凝胶作为生物电子应用的传感材料正在迅速崛起，但由于其含水量过高而缺乏机械强度和粘附力。我们提出了一种重氮丙啶接枝的聚己内酯粘合剂（CaproGlu）/碳纳米管（CNT）复合材料，它可以在组织-机器界面提供湿粘附力和强大的机械性能。引入的碳纳米管不仅增强了CaproGlu，还形成了导电通路。CaproGlu复合材料的电导率为0.1 S m，电荷存储容量为5 μC cm。所得复合材料具有生物相容性，可用作应变传感器来检测机械变形。
