Humidity sensor based on poly(lactic acid)/PANI–ZnO composite electrospun fibers
Hemalatha Parangusan, Jolly Bhadra, Zubair Ahmad, Shoaib Mallick, Farid Touati, Noora Al‐Thani
Abstract
) for the pure PLA is observed at 149.3 °C, and it is shifted to 153.0 °C for the PLA/PANI-ZnO composite fibers. The enhanced thermal properties of the composite fibers are due to the interaction between the polymer and the nanoparticles. The water contact angle measurements probe the surface hydrophilicity of the PLA/PANI-ZnO composite fibers. The role of the PANI-ZnO nanocomposite on the sensing behavior of PLA fibers has also been investigated. The humidity sensing properties of the composite fiber based sensor are studied in the relative humidity (RH) range of 20-90% RH. The experimental results show that the composite fiber exhibited good response (85 s) and recovery (120 s) times. These results indicate that the one-dimensional (1D) fiber structure enhances the humidity sensing properties.