The optimal blend ratio of recycling polypropylene waste with pure polypropylene

Blends of thermomechanical degraded polypropylene and virgin polypropylene materials have been prepared with different compostttion by weight. To produce the same end-use items, mechanical properties showed that the optimal blend ratio by weight is 25% of Rafia polypropylene waste to 75% of virgin polypropylene. Blends containing ratios by weight of 40% Rafia polypropylene waste (R-PP). to 60% of either virgin polypropylene (V-PP), or photo-oxidized degraded polypropylene (W--PP) are both suitable to produce agricultural crates of acceptable performance. The experimental results are explained in terms of structural and morphological changes. (author). 19 refs., 8 figs.,3 tabs