Journal of Thermal Analysis and Calorimetry

, Volume 110, Issue 3, pp 1407–1414 | Cite as

Effect of ZnO nanoparticles on kinetics of thermal degradation and final properties of ethylene–propylene–diene rubber systems

  • Mohammadreza Kalaee
  • Shahin Akhlaghi
  • Saeedeh Mazinani
  • Alireza Sharif
  • Younes Charesaz Jarestani
  • Mehrzad Mortezaei
Article

Abstract

The morphology, thermal degradation behavior in addition to static and dynamic mechanical properties of various ethylene–propylene–diene (EPDM) rubber compounds containing nano-zinc oxide (NZnO) were investigated compared to those of EPDM with ordinary-sized ZnO (OSZnO). The field-emission scanning electron microscopy studies showed that unlike the conventional system, the formation of large size ZnO agglomerates was discouraged for NZnO filled systems. Thermogravimetric analysis (TG) revealed that the thermal degradation of EPDM system was delayed upon the inclusion of NZnO instead of OSZnO in the compound. The kinetic analysis of TG data based on Friedman and Kissinger methods showed that the nanocomposite samples exhibited higher activation energy (Ea) and lower order of reaction (n) over the conventional system, suggesting the enhancement of thermal stability upon decreasing ZnO particle size. The results obtained from dynamic mechanical analysis and static mechanical characterizations in terms of hardness, resilience, and abrasion tests interestingly indicated that NZnO not merely could act as a thermal insulator, but also could perform as a nano-filler to improve the final performance of EPDM elastomers.

Keywords

Nano-zinc oxide EPDM Thermal behavior Thermal degradation kinetics Dynamic mechanical analysis 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Mohammadreza Kalaee
    • 1
  • Shahin Akhlaghi
    • 2
  • Saeedeh Mazinani
    • 3
  • Alireza Sharif
    • 4
  • Younes Charesaz Jarestani
    • 5
  • Mehrzad Mortezaei
    • 2
  1. 1.Polymer Engineering Group, Department of EngineeringQom University of TechnologyQomIran
  2. 2.Department of Polymer Engineering, South Tehran BranchIslamic Azad UniversityTehranIran
  3. 3.Amirkabir Nanotechnology Research Institute (ANTRI)Amirkabir University of TechnologyTehranIran
  4. 4.Department of Chemical Engineering, Polymer Engineering GroupTarbiat Modares UniversityTehranIran
  5. 5.Department of Polymer Engineering, Science and Research BranchIslamic Azad UniversityTehranIran

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