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Effectiveness of Compatibilizers and Filler on the Performance of the Blends of Thermoplastic Polyurethane/Polyolefins

Author(s): A Kamble

Journal: Chemical Sciences Journal
ISSN 2150-3494

Volume: 2011;
Start page: CSJ;
Date: 2011;
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Keywords: Polymer blends | compatibilizer | polyurethane | filler | SEM

Thermoplastic Polyurethane (TPU) is a highly versatile material with superior physical properties but high cost. Melt blending ofTPU with Polyolefins (PO) can lower the cost and improve mechanical and chemical properties. Since TPU and PO arecompletely immiscible polymers, property enhancement cannot be attained. Effect of incorporation of PolypropyleneCopolymer (PPCP) as compatibilizer on the miscibility of the blends and effect of calcium carbonate as filler to enhance themechanical properties were studied. Blends were produced by melt mixing using a single screw extruder. Miscibility studieswere done using Scanning Electron Microscope (SEM) and thermal characteristics were determined using Differential ScanningCalorimeter (DSC). Mechanical properties like tensile strength, impact strength, flexural strength and hardness were alsostudied using Universal Testing Machine (UTM). The results show that the blend having 20% loading of polyurethane (PU) withsuitable compatibilizers and calcium carbonate gives excellent performance in all aspects.
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