Effect of multi-walled carbon nanotube loading on the dielectric properties of polylactic acid

Dielectric materials which capable to store charges are constantly being developed and improved for electronic applications such as in microelectronic integrated circuits (ICs). In this study, polylactic acid (PLA)/multiwalled carbon nanotube (MWCNT) composites are prepared and their dielectric properties are investigated. PLA/MWCNT composites have PLA as the matrix and MWCNT as filler with a loading of 1 wt%. The composites are porous composites achieved by using solvent casting and particulate leaching (SCPL) method. A frequency range of 1 kHz to 1 MHz is applied to measure the dielectric properties at room temperature. The PLA/MWCNT composites are categorized as low-k dielectric materials looking at the results of the dielectric test.