PCL/CNTs/PLA blends containing four wt.% CNTs were synthesized via the melt-spun procedure as fibers . The fibers exhibited good electrical properties for application as a textile sensor. CNTs\PCL composite can be used to monitor the temperature in a range of 20-80 °C . MWCNT exhibited more remarkable POM/PLA composite improvement than GNPs (Figure ) . The conductivity depends on the loading of both materials (Figure ) . The nanofiller materials such as metallic nanoparticles or metal oxides with high conductivity ensure high conductivity. The electrical properties of PVA can be improved by adding In2O3/Cr2O3 nanoparticles and GO . 3D printing PVA/GO devices can be operated in a small gate voltage range of -0.5 to 2.5 V for electronic devices and circuits . Graphite/diamond particles and G enhanced the electroconductive of PLA nanocomposites. Nano-clay improved the electrical conductivity of bacterial cellulose (BC)\PANI to 0.49 S•cm -1 using only 5 wt.% of the clay . It exhibited 16 folds improvement in the electrical conductivity for the polymer blend . The improvement in the conductivity of biodegradable polymers enable the fabrication of energy storage devices with high biodegradability .