Polyvinyl alcohol(PVA)-based conductive hydrogels have gained significant attention in various fields,such as healthcare monitoring,soft robotics,and flexible wearable electronic devices.In this study,we dispersed poly-pyrrole@poly-dopamine nanoparticles(PPy@PDA NPs)in a pre-gel solution of polyvinyl alcohol and polyethylenei-mine(PEI),and prepared a polyvinyl alcohol/polyethyleneimine/poly-pyrrole@poly-dopamine nanoparticle(PPN)conductive composite hydrogel via a freeze-thaw cycle method.The PPN hydrogel exhibited excellent mechanical properties,with a fracture strain of 507％and a maximum tensile strength of 158.59 kPa.It also exhibited strong adhesion to the skin,with an adhesion strength of 21.49 kPa.The PPN hydrogel demonstrated a maximum electrical conductivity of 0.28 S/m.Additionally,it showed excellent biocompatibility,and the ΔR/R0-t curve confirmed its capability to detect human motion signals and input signals.The PPN hydrogel holds great promise for applications in the field of flexible sensing.
维普
万方数据