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Morphology and mechanical properties.(Blends of Thermoplastic Polyurethane and Maleic-Anhydride...

By Potschke, Petra; Stutz, Herbert; Wallheinke, Katrin
Publication: Polymer Engineering and Science
Date: Tuesday, June 1 1999

Thermoplastic polyurethane elastomers (TPU) and polyethylene (PE) form immiscible blends with an extremely low compatibility. In order to improve the dispersion, stability, and properties of these blends, polyethylene was grafted with maleic anhydride (PE-g-MA). Subsequently, it was blended with a commercial polyester-type TPU in a twin-screw extruder. With PE-g-MA as blend component, the particle size was dramatically reduced in comparison with PE. Coalescence was significantly reduced and the increase in particle size with composition was less pronounced than in blends with PE. In addit

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