Flexible Humidity Sensors Based on Nanocellulose

Abstract

The study describes methods for preparing cellulose from miscanthus stalks in an environmentally friendly way using a solution of peracetic acid and nanocellulose by the method of hydrolysis of organosolv miscanthus pulp. The properties and application of nanocellulose in capacitive and resistive humidity sensors have been studied. We have investigated influence of electrode parameters and operating frequency on sensor characteristics. It was determined that device sensitivity increases with decreasing of the distance between electrodes and operating frequency. The responses of capacitive and resistive humidity sensors based on nanocellulose were in the range of 1.15 - 102 nF and 5,1*101 - 1,1*103 correspondingly. The maximum value of sensitivity was reached up to 0,094 (%RH)−1.