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- W2465943564 abstract "The blending of polymers provides a powerful route for obtaining materials with improved property/cost performance. Since most blended polymers are immiscible, compatibilization is required to obtain maximum synergy. The blends of thermoplastic polyurethane, TPU and isotactic polypropylene, iPP are incompatible because of large differences in polarities between the nonpolar crystalline iPP and polar TPU and high interfacial tensions. The miscibility between TPU and iPP in a blend can be improved by addition of compatibilizers. In this research, blends of TPU and iPP were modified with two styrene- ethylene/butylene- styrene, SEBS, triblock copolymers with the aim of improving the compatibility and in particular thermal stability of the TPU/iPP blends. The compatibilizers involved an unfunctionalized, SEBS and one functionalized grade containing maleic anhydride, SEBS-g-MAH, grafted to the midblock. The effects of the compatibilizers were evaluated by on thermal stability of the TPU/iPP blends by thermogravimetric analysis, TGA. The samples of neat homopolymers and their blends without and with 5 wt. % of compatibilizers were prepared using a laboratory twin-screw extruder with various rations of TPU and iPP, followed by classic molding. Based on the results it can be concluded that both block copolymers as compatibilizers improve miscibility of TPU/iPP blends. According to TGA results, the addition of compatibilizers enhances thermal stability." @default.
- W2465943564 created "2016-07-22" @default.
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- W2465943564 date "2014-01-01" @default.
- W2465943564 modified "2023-10-01" @default.
- W2465943564 title "COMPATIBILIZATION OF THERMOPLASTIC POLYURETHANE/POLYPROPYLEN BLENDS WITH TWO DIFFERENT BLOCK COPOLYMERS" @default.
- W2465943564 hasPublicationYear "2014" @default.
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