Exfoliated graphene-dispersed poly (lactic acid)-based nanocomposite sensors for ethanol detection

This article demonstrates the utilization of exfoliated graphene (GR) for fabrication of conductive PLA/GR nanocomposites which are characterized by using XRD, FESEM and impedance analysis. Optimum loading is found to be 1.7 wt% GR when the impedance is drastically reduced to 105 Ω with respect to pure PLA (1011 Ω). Impedance of the composites is further gradually reduced to 104 Ω range for higher GR loading up to 3 wt%. A new concept of...