He Xiao-Xiao, Li Jin-Tao, Jia Xian-Sheng, Tong Lu, Wang Xiao-Xiong, Zhang Jun, Zheng Jie, Ning Xin, Long Yun-Ze
Collaborative Innovation Center for Nanomaterials & Devices, College of Physics, Qingdao University, Qingdao, 266071, China.
Industrial Research Institute of Nonwovens & Technical Textiles, Qingdao University, Qingdao, 266071, China.
Nanoscale Res Lett. 2017 Dec;12(1):476. doi: 10.1186/s11671-017-2246-y. Epub 2017 Aug 1.
A multi-hierarchical porous polyaniline (PANI) composite which could be used in good performance pressure sensor and adjustable sensitivity gas sensor has been fabricated by a facile in situ polymerization. Commercial grade sponge was utilized as a template scaffold to deposit PANI via in situ polymerization. With abundant interconnected pores throughout the whole structure, the sponge provided sufficient surface for the growth of PANI nanobranches. The flexible porous structure helped the composite to show high performance in pressure detection with fast response and favorable recoverability and gas detection with adjustable sensitivity. The sensing mechanism of the PANI/sponge-based flexible sensor has also been discussed. The results indicate that this work provides a feasible approach to fabricate efficient sensors with advantages of low cost, facile preparation, and easy signal collection.
通过一种简便的原位聚合法制备了一种可用于高性能压力传感器和可调灵敏度气体传感器的多级多孔聚苯胺（PANI）复合材料。商业级海绵被用作模板支架，通过原位聚合来沉积聚苯胺。由于整个结构中存在大量相互连通的孔隙，海绵为聚苯胺纳米分支的生长提供了足够的表面。这种柔性多孔结构有助于复合材料在压力检测中表现出高性能，具有快速响应和良好的恢复性，以及在气体检测中具有可调灵敏度。还讨论了基于聚苯胺/海绵的柔性传感器的传感机制。结果表明，这项工作提供了一种可行的方法来制造高效传感器，具有低成本、制备简便和信号采集容易等优点。
