caa a22 4500 378903527 CHVBK 20180305123524.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/epoly.2004.4.1.837 doi (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.837 Dynamic mechanical study of thermoplastic polyurethane/ polypropylene blends [Elektronische Daten] [Emi Govorčin Bajsić, Vesna Rek] Thermoplastic polyurethanes (TPU) are an important class of elastomers that found many novel and specialized applications where high mechanical and chemical performances are prerequisites. They are known for their good mechanical strength, wear and tear resistance, and low-temperature elasticity. The aim of this work is to study the viscoelastic behaviour of TPU, polypropylene (PP) and their blends using dynamic mechanical analysis. Blends of TPU+PP as well as samples of pure TPU and PP were prepared using a laboratory twin-screw extruder. Primary and secondary viscoelastic functions were determined. Primary viscoelastic functions, viz. storage modulus, loss modulus and loss tangent, were evaluated in the temperature range -100 to 250°C. The secondary viscoelastic functions creep, recovery and creep modulus were investigated in the creepfatigue regime at 25 - 65°C. A master curve at the reference temperature 25°C for the creep modulus of TPU, PP and TPU+PP blends was created by applying the time-temperature correspondence principle. The obtained results are discussed. © 2013 by Walter de Gruyter GmbH & Co. Bajsić Emi Govorčin Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb, Croatia; Fax ++386-1-4828476 aut Rek Vesna Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb, Croatia; Fax ++386-1-4828476 aut e-Polymers De Gruyter 4/1(2004-12-01), 837-846 2197-4586 4:1<837 2004 4 epoly https://doi.org/10.1515/epoly.2004.4.1.837 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/epoly.2004.4.1.837 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bajsić Emi Govorčin Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb, Croatia; Fax ++386-1-4828476 aut NATIONALLICENCE 700 1- Rek Vesna Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb, Croatia; Fax ++386-1-4828476 aut NATIONALLICENCE 773 0- e-Polymers De Gruyter 4/1(2004-12-01), 837-846 2197-4586 4:1<837 2004 4 epoly CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter