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Synthesis and characterization of alumina flakes/polymer composites

Afsharimani, N. S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1002/app.31410
  3. Abstract:
  4. Alumina flakes were prepared by solution combustion method and milled to provide powder. XRD and SEM data exhibited microsized flakes with 100 nm thickness and nanosized grains. Then the powders were dispersed in polystyrene (PS) and poly methyl methacrylate (PMMA) matrixes and thin sheets of composites were produced by solution method. Mechanical properties of the composites were characterized using tensile test and their fracture surfaces, elemental composition and hydrophobic property were tested by SEM, EDX and contact angle techniques, respectively. The results exhibited better mechanical properties compared to pure polymer samples i.e. the elastic modulus in PMMA and PS composites, were increased about 107 and 109%, respectively. In addition the composite surfaces became more hydrophobic than pure polymer systems
  5. Keywords:
  6. Alumina ; Films ; Alumina films ; Composite surface ; Elemental compositions ; Fracture surfaces ; Hydrophobic properties ; Matrix ; Nanosized grains ; Pure polymers ; SEM ; Solution combustion method ; Solution methods ; Synthesis and characterization ; Tensile tests ; Thin sheet ; XRD ; Contact angle ; Esters ; Fracture ; Hydrophobicity ; Nanocomposites ; Polymer blends ; Polystyrenes ; Tensile strength ; Tensile testing ; Mechanical properties ; Dispersion ; Elastic modulus ; Hydrophobic property ; Mechanical property ; Nanocomposite ; Polymer solution ; Polymethyl methacrylate ; Polystyrene ; Synthesis
  7. Source: Journal of Applied Polymer Science ; Volume 115, Issue 6 , 2010 , Pages 3716-3720 ; 00218995 (ISSN)
  8. URL: http://onlinelibrary.wiley.com/doi/10.1002/app.31410/abstract