Effect of carbon nanotubes on the phase morphology and electrical conductivity of PS/POE/CNT polymer blend nanocomposite
Paper ID : 1444-ICNS
Authors:
Mohammad Saeed Cheraghi1, Gholamreza Pircheraghi *2, Mohammad Saeed Cheraghi3
1Materials Science and Engineering Department, Sharif University of Technology
2Materials Science and Engineering Department, Sharif University of Technology
3Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
Abstract:
This paper aims to study the effect of carbon nanotube (CNT) on the morphology and electrical properties of the immiscible polystyrene /polyolefin elastomer (PS/POE) blends prepared by melt compounding. The morphological study by means of FE-SEM imaging showed that the addition of CNTs into the 80:20 PS/POE blend leads to conversion of the morphology from matrix-dispersed to the co-continuous morphology. Meanwhile, electrical conductivity measurements demonstrated that the conductivity increased 10 orders of magnitude by adding only 1wt. % CNT. This is so important to achieve the electrically conductive/antistatic polymeric materials with a low amount of nanofillers. Rheological and morphological analyses points out the well dispersion, and selective localization of CNTs in the PS phase and at the interface of polymer phases, and change the structure to the short range co-continuous morphology in the PS/POE/CNT blend nanocomposites. Therefore, because of the double percolation phenomenon, the highly conductive polymer nanocomposites with low amounts of CNTs are achieved.
Keywords:
carbon nanotubes, nanocomposites, immiscible polymer blends, electrical conductivity, double percolation
Status : Abstract Accepted (Poster Presentation)