Conductive Composite Materials of Polyethylene and Polypyrrole with High Modulus and High Strength

Abstract

Composite films of polyethylene (PE) and polypyrrole (PPy) were prepared by polymerization of PPy on an ultradrawn polyethylene film with high modulus and high strength in ferric chloride (FeCl3) aqueous solution. The electrical conductivity of the composite film was found to be related to the polymerization conditions, such as polymerization temperature, polymerization time, the concentration and the oxidation potential of the FeCl3 solution. Scanning electron microscopy, FTIR and 13C NMR spectra were used to elucidate the morphological and structural variations of PPy prepared under different conditions, which lead to the differences in the electrical properties of the resultant composite films. The best electrical conductivity of the composite was about 5.5 S/cm for the film prepared under optimum conditions. The Young's modulus and the tensile strength reached 80 GPa and 3.2 GPa, respectively, which indicated the successful production of a conductive polymer with high strength and high modulus.

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

“…, percolation threshold about 30 to 60 wt% of ICP and poor mechanical properties has been reported [34][35][36][37][38]. Therefore, a great challenge is how to produce a conducting polymer mixture through melt blending process with higher electrical conductivity at low percolation threshold of ICP.…”

Preparation and characterization of nylon‐6/PPy/MMT composite of nanocomposite

“…Polypyrrole (PPy) has been one of the most studied conductive polymers because of its physical and electrical properties and also its ease of synthesis. For example, composites of PPy and ethylene vinyl alcohol,1 polypropylene,2 polyethylene,3 and ultrahigh‐molecular‐weight polyethylene,4, 5 polyurethane,6 polymethyl methacrylate,7 or even with natural rubber8 have been prepared by insertion of the conducting polymer into the polymer matrix. In such composites or blends, the conducting polymer satisfies the conductivity requirements, while the polymer matrix play the responsibility for enhanced mechanical properties in the composite.…”