Exploring the Influence of Methylene Diphenyl Diisocyanate as a Modifier for Ethylene Vinyl Acetate/Thermoplastic Polyurethane Blends |
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Authors: | Joyeeta Dutta Tuhin Chatterjee Padmanabhan Ramachandran |
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Affiliation: | Rubber Technology Centre, Indian Institute of Technology, Kharagpur, West Bengal, India |
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Abstract: | Ethylene vinyl acetate (EVA)/thermoplastic polyurethane (TPU) blend at various blend ratios has been modified via reactive processing with 4,4′-methylene diphenyl diisocyanate (MDI). Modification of the blends with even small amount of MDI shows significant improvement in physico-mechanical properties for EVA/TPU 50/50 and 30/70 blends, and it is also supported by the superior melt rheological behavior and dramatic improvement in oil resistance property. After the treatment of electron beam (dose range: 50–150?kGy), radiation crosslinked EVA/TPU (30:70) blend reveals further improvement in various properties. This particular material can find potential application as cable sheathing component. |
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Keywords: | Crosslinking morphology reactive processing rheology thermoplastic |
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