Add to ORKGThe objective of this thesis was to increase the understanding of the reactive extrusion of thermoplastic polyurethane. Overall, several issues were identified: • Using a relative simple extrusion model, the reactive extrusion process can be described. This model can be used to further investigate and optimize the reactive extrusion of thermoplastic polyurethane. • Premixing has a small beneficiary effect on the efficiency of the extrusion process and the quality of the product formed. • The depolymerization reaction has a large influence on the extrusion process • For a regular polyurethane, the temperature and the mixing conditions do not affect the kinetic parameters over a wide temperature range