Facile fabrication of stretchable and compressible strain sensors by coating and integrating low-cost melamine foam scaffolds with reduced graphene oxide and poly (styrene-b-ethylene-butylene-b-styrene)
Facile fabrication of stretchable and compressible strain sensors by coating and integrating low-cost melamine foam scaffolds with reduced graphene oxide and poly (styrene-b-ethylene-butylene-b-styrene)
复制标题
通过涂覆和集成具有还原氧化石墨烯和聚（苯乙烯-b-乙烯-丁烯-b-苯乙烯）的低成本三聚氰胺泡沫支架，轻松制造可拉伸和可压缩应变传感器
DOI：
10.1016/j.cej.2020.125429
复制
发表时间：
2020-10-15
影响因子：
15.1
通讯作者：
Feng, Jiachun
中科院分区：
文献类型：
--
作者：
Cheng, Le;Feng, Jiachun
随着电子设备智能化的发展，柔性、可穿戴的应变传感器在电子皮肤、智能机器人等领域得到了广泛的应用。在这项工作中，我们提出了一种简便的方法，通过使用市售的三聚氰胺形式（MF）的可拉伸应变传感器以及可压缩的应变传感器的制备。首先，MF被还原的氧化石墨烯（rGO）通过聚乙烯亚胺和氧化石墨烯的层层组装，然后化学还原，构建导电网络。然后通过溶液吸附法将热塑性弹性体聚（苯乙烯-b-乙烯-丁烯-b-苯乙烯）（SEBS）注入MF@rGO支架中。通过调节SEBS溶液的浓度，制备了可拉伸和可压缩的应变传感器，它们都具有优异的机械性能、灵敏的响应性和机电耐久性。这两种类型的传感器的变形能力可以达到高达50%的应变，拉伸和压缩应变传感器的最大应变计因子分别为2.43和1.74。可拉伸和可压缩应变传感器在至少1000次循环期间保持稳定信号。还展示了实时监测人体运动的潜在传感应用。
With the progress of intelligent electronic equipment, flexible and wearable strain sensors are being widely used in various applications such as electronic skins and smart robot. In this work, we proposed a facile method for the preparation of stretchable strain sensors as well as compressible strain sensors by using commercially available melamine form (MF). Firstly, MF was coated with reduced graphene oxide (rGO) to construct conductive networks via layer-by-layer assembly of polyethyleneimine and graphene oxide followed by chemical reduction. Thermoplastic elastomer poly (styrene-b-ethylene-butylene-b-styrene) (SEBS) was then infused into the MF@rGO scaffolds through solution absorption method. By adjusting the concentration of SEBS solution used, stretchable and compressible strain sensors were fabricated and both of them exhibited excellent mechanical properties, sensitive responsiveness and electromechanical durability. The deformation capacity of these two types of sensors could reach as high as 50% strain and the maximum gauge factors of stretchable and compressible strain sensors was 2.43 and 1.74, respectively. Stable signals during at least 1000 cycles for both stretchable and compressible strain sensors were well maintained. The potential sensing application of real-time monitoring of human motions was also demonstrated.