Determining the PE fraction in recycled PP

The presence of a polyethylene (PE) fraction in recycled polypropylene (PP) will influence the processing as well mechanical and thermal properties polypropylene. objective this work has been to compare methods used determine PE PP, establishing calibration curves for each method. Plastics waste be mix different grades – homopolymers copolymers. It therefore tested how specific material affect results. Characterization were differential scanning calorimetry (DSC), FT-IR spectroscopy, NMR, gel content measurement after peroxide extrusion. We have applied derived two post-consumer, PP (rPP) addition known 50/50 blend PP. DSC, give quite consistent estimates content.