Compounding Procedure, Processing Behaviour and Property Profiles of Polymeric Blends Based on Thermoplastic Poly(ester-urethanes) and Destructurized Starch

This paper describes the compounding procedure for production of blends consisting of thermoplastic poly(ester-urethanes) (TPU) and thermoplastic starch (TPS) as well as their property profiles. These blends were prepared using co-rotating twin-screw extruders. Different process designs were studied and their impact on material properties is discussed. Even if the process design, the process parameters, and the TPU-content remain unchanged, the morphology can be improved by the use of different types of TPS through the adjustment of the viscosity ratio λ1 . Excellent flat and tubular films can be produced which are promising materials for a variety of applications.