Structural and Thermal Analysis of Carbon Nano-Particles/Polypyrrole/Poly (Ethylene - Co - Vinyl Acetate) Composites

Polymeric materials and their composites have attracted an increasing attention because of their great significance. This study includes the preparation of composites of carbon nano-particles/Polypyrrole (CB/PPY) embedded in Ethylene-vinyl acetate copolymer (EVA) with different contents of 0, 5, 10, 15, 20 and 30 parts per hundred parts by weight of polymer (pph). X-ray diffraction (XRD) was utilized to characterize the structure of the prepared composites. Thermal analysis including differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were carried out to detect the miscibility degree of the composites and their thermal stability. The Gordon - Taylor equation was modified to fit the experimental values of the glass transition temperatures (T-g) at low and high contents of CB/PPY. The obtained values of T-g showed complete miscibility of most of the composites. From XRD measurements, the crystallinity of the composites was found to be decreased by embedding (CB/PPY) into EVA. The curves of TGA show more thermal stabilities for the composites compared to the pristine EVA.