Journal of Thermal Analysis and Calorimetry

, Volume 110, Issue 3, pp 1407-1414

First online:

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

  • Mohammadreza KalaeeAffiliated withPolymer Engineering Group, Department of Engineering, Qom University of Technology Email author 
  • , Shahin AkhlaghiAffiliated withDepartment of Polymer Engineering, South Tehran Branch, Islamic Azad University
  • , Saeedeh MazinaniAffiliated withAmirkabir Nanotechnology Research Institute (ANTRI), Amirkabir University of Technology
  • , Alireza SharifAffiliated withDepartment of Chemical Engineering, Polymer Engineering Group, Tarbiat Modares University
  • , Younes Charesaz JarestaniAffiliated withDepartment of Polymer Engineering, Science and Research Branch, Islamic Azad University
  • , Mehrzad MortezaeiAffiliated withDepartment of Polymer Engineering, South Tehran Branch, Islamic Azad University

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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 (E a ) 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.


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