Structural, electrical and thermal properties of composites based on conducting polymer

Abstract EN

In this work, we report the structural, thermal and electrical properties of composites consisting of polypyrrole particles in a polymethylmethacrylate matrix.

electrical resistivity analysis of these percolating composites showed a remarkable change in the conduction mechanisms below and above the percolation threshold.

structural properties were studied using x-ray diffraction, showing increases in the crystallinity index for filler concentrations above the critical percolation.

thermogravimetric analysis was used to study thermal degradation.

it shows a transition from a single peak for concentrations below the percolation threshold to a double peak for concentrations above that point.

the increase in the degradation temperature with the concentration of polypyrrole indicates the increase of thermal stability.