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The Influence of Crysnanoclay Addition on Mechanical and Thermal Properties of Thermoplastic Polyurethane Elastomeric with Polycarbonate Nanocomposites
Authors:Shahryar Pashaei  Siddaramaiah  Akheel Ahmed Syed  G. Ramachandra Reddy  S. Srinivasa
Affiliation:1. Department of Chemistry , Islamic Azad University, Urmia Branch , Urmia , Iran shahryarpashaei@yahoo.com;3. Department of Polymer Science and Technology , Sri Jayachamarajendra College of Engineering , Mysore , India;4. Department of Studies in Chemistry , University of Mysore , Mysore , India;5. Department of Polymer Science &6. Technology , Sri Krishna Devaraya University , Ananatapur , India
Abstract:
A series of crysnanoclay-loaded thermoplastic polyurethane (TPU) elastomer/polycarbonate (PC) nanocomposites have been prepared using twin screw extruders. The physicomechanical properties such as tensile behaviors, flexural properties and impact strength of the composites have been reported. Significant improvement in tensile modulus and flexural modulus were noticed for nanocomposites. The thermal characteristics of nanocomposites have been determined by thermogravimetric analysis (TGA) techniques. Thermal degradation kinetic parameters such as energy of activation (Ea) have been calculated from TGA thermograms for the nanocomposites using three mathematical models namely; Coats–Redfern, Horowitz – Metzger and Broido's methods and the results are compared. The effect of crysnanoclay on the storage modulus (E′), loss modulus (E″), and damping factor (tan δ) as a function of temperature have been measured by dynamic mechanical analysis (DMA). The storage moduli of nanocomposites have been increased after incorporating crysnanoclay in polymer matrix.
Keywords:Crysnanoclay  Mechanical properties  Nanocomposites  Polycarbonate  Thermal characteristics
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