Preparation and Sensing Properties of Lithium Bromide/Polyvinyl Alcohol Conducting Hydrogels
The basic and mechanical properties of the prepared LiBr/PVA conductive hydrogel were characterized,and the optimum preparation ratio of the hydrogel was determined as the mass ratio of PVA︰LiBr︰H2O=1︰0.15︰9.For the as-prepared hydrogel,its conductivity is up to 140 mS/m,which is increased by about 50％ when compared with the pure PVA hydrogel.Moreover,its tensile stress and strain are increased to 0.25 Mpa and 250％,respectively.The hydrogel has a good speed response effect,which can provide a good speed feedback,a good tensile strain performance (≥75％),excellent fatigue resistance (>1000 times),as well as a sensitive response speed.It shows good sensing performance,indicating great potential in tensile strain sensors.
Conductive hydrogelStrain sensorSensing performanceResistance to fatigueHofmeister effect
国家科技期刊平台
NSTL
万方数据
