As a smart wearable sensor device, the mildew of the biocompatible hydrogel limits its application. In this paper, silver nanoparticles were prepared by solid-state reduction of hydroxyethyl cellulose and compounded into a chemically cross-linked hydrogel as an antibacterial, flexible strain sensor. Because the high surface energy of silver nanoparticles can quench free radicals, we designed three initiators to synthesize hydrogels: ammonium persulfate (APS), 2,2'-Azobis(2-methylpropionitrile) (AIBN) and 2,2'-azobis(2-methylpropionamidine) dihydrochloride (AIBA). Impressively, silver nanoparticles composite hydrogel could only be successfully fabricated and triggered by the AIBN. The mechanical property of the composite hydrogel (0.12 MPa at 704.33 % strain) was significantly improved because of dynamic crosslinking point by HEC. Finally, the composite hydrogels are applied to the field of antibacterial strain sensor and the highest Gauge Factor (GF) reached 4.07. This article proposes a novel, green and simple strategy for preparing silver nanoparticles and compounding them into a hydrogel system for antibacterial strain sensor.

作为一种智能的可穿戴传感器设备，生物相容性水凝胶的霉菌限制了其应用。在本文中，通过对羟乙基纤维素进行固态还原来制备银纳米颗粒，并将其复合到化学交联的水凝胶中，作为一种抗菌，柔性应变传感器。由于银纳米颗粒的高表面能可以猝灭自由基，因此我们设计了三种引发剂来合成水凝胶：过硫酸铵（APS），2,2'-偶氮双（2-甲基丙腈）（AIBN）和2,2'-偶氮双（2 -甲基丙ion）二盐酸盐（AIBA）。令人印象深刻的是，银纳米颗粒复合水凝胶只能由AIBN成功制造和触发。由于HEC的动态交联点，复合水凝胶的机械性能（在704.33％应变时为0.12 MPa）得到了显着改善。最后，该复合水凝胶被应用于抗菌应变传感器领域，其最高表观因子（GF）达到4.07。本文提出了一种新颖，绿色和简单的策略，用于制备银纳米颗粒并将其复合到用于抗菌应变传感器的水凝胶系统中。