Abstract
The possibility of polypropylene (PP) modification by regenerated polyurethane (PU), obtained after partial thermochemical decomposition of waste PU, has been studied. The partial thermochemical decomposition of waste PU was carried out using diethanolamine (DEA) in a one-screw extruder. The degradation product was a thermoplastic mixture, applicable for reuse without any purification and fractionation. The influence of regenerated PU on mechanical properties and thermal stability of PP was studied using universal testing machine (UTM), differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). The results showed that regenerated PU could be reused as an effectively polymeric plasticizer for PP and the addition of regenerated PU did not decrease the thermal stability of PP.
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