Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 4, pp 2367–2374 | Cite as

Radiation processing analysis of aged EPDM/vinyl-POSS hybrid systems

  • Traian ZaharescuEmail author


The hybrid blends consisting of ethylene–propylene–diene monomer (EPDM) and vinyl polyhedral silsesquioxane (vinyl-POSS) nanoparticles were studied. Increasing filler concentrations, namely 2, 4, 6 and 8 phr, were added to the polymer substrate. The thermal stability was tested by chemiluminescence, while infrared spectroscopy describes the degradation development. The accelerated oxidative degradation promoted by thermal γ-irradiation treatments revealed that the low concentrations of vinyl-POSS create favorable conditions for hindering the development of the oxidation aging of host polymer. The most stable hybrid of this series contains 6 phr of vinyl-POSS. The addition of vinyl-POSS in the waste EPDM formulations is a proper solution for its reclaiming. The structural aspects related to the contribution of vinyl-POSS to oxidation prevention are discussed.


EPDM POSS Stabilization Chemiluminescence 



The authors of this paper are grateful to Romania Space Agency (ROSA) for financial support of the Project “Biosealing for Mars Sample Containment System” 137/2017 that includes the present results.


  1. 1.
    Fearon PK, Bigger SW, Billingham NC. DSC combined with chemiluminescence for studying polymer oxidation. J Therm Anal Calorim. 2004;76:75–83. Scholar
  2. 2.
    Blanco I. End-life prediction of commercial PLA used for food packaging through short term TGA experiments. Real chance or low reliability. Chin J Polym Sci. 2014;32:681–9. Scholar
  3. 3.
    Zaharescu T, Râpă M, Marinescu V. Chemiluminescence kinetic analysis on the oxidative degradation of poly(lactic acid). J Therm Anal Calorim. 2017;128:185–91. Scholar
  4. 4.
    Blanco I. Lifetime prediction of polymers: to bet, or not to bet—is this the question? Materials. 2018;11:1383. Scholar
  5. 5.
    Laycock B, Nicolić M, Colwell JM, Gautier E, Halley P, Bottle S, George G. Lifetime prediction of biodegradable polymers. Prog Polym Sci. 2017;71:144–89. Scholar
  6. 6.
    Tangtubtim S, Saikrasun S. Effect of functionalized CNT’s and liquid crystalline polymers on thermos-oxidative stability of polyethylene-based hybrid composites. J Therm Anal Calorim. 2017;128:235–47. Scholar
  7. 7.
    Su J, Zhang J. Improvement of mechanical and dielectric properties of ethylene propylene diene monomer (EPDM)/barium titanate (BaTiO3) by layered mica and graphite flakes. Compos B. 2017;112:148–57.,compositesb.2017.01.002.CrossRefGoogle Scholar
  8. 8.
    Fritzsche J, Das A, Stöckelhuber KW, Jurk R, Heinrich G, Klüppel M. Advanced elastomer nano-composites based on CNT-hybrid filler systems. Compos Sci Technol. 2009;69:2135–43. Scholar
  9. 9.
    Cheng JJ, Zhou FB. Flame-retardant of sodium silicate/polyisocyanate organic–inorganic hybrid material. J Therm Anal Calorim. 2016;125:913–8. Scholar
  10. 10.
    Zaharescu T, Ilieș D-C, Roșu T. Thermal and spectroscopic analysis of stabilization effect of copper complexes in EPDM. J Therm Anal Calorim. 2016;123:231–9. Scholar
  11. 11.
    Javad Ahmadi S, Huang Y-D, Ren NQ, Mohaddespour A, Ahmadi-Brooghani SY. The comparison of EPDM/clay nanocomposites and conventional composites in exposure of gamma irradiation. Compos Sci Technol. 2009;69:997–1003. Scholar
  12. 12.
    Zhang CY, Wang JC, Zhang Y. Effect of dendrimer modified montmorillonite on structure and properties of EPDM. Polym Test. 2017;62:41–50. Scholar
  13. 13.
    Attia NF, Hegazi EM, Abdelmageed AA. Smart modification of inorganic fibers and flammability mechanical and radiation shielding of their rubber composites. J Therm Anal Calorim. 2018;132:1567–78. Scholar
  14. 14.
    Nabil H, Ismail H, Azura AR. Comparison of thermos-oxidative ageing and thermal analysis of carbon black-field NR/Virgin EPDM and NR/recycled EPDM blends. Polym Test. 2013;32:631–9. Scholar
  15. 15.
    Zaharescu T, Marinescu V, Hebda E, Pielikowski K. Thermal stability of gamma-irradiated polyurethane/modified POSS nanoparticles. J Therm Anal Calorim. 2018;133:49–54. Scholar
  16. 16.
    Morlat-Therias S, Fanton E, Tomer NS, Rana S, Singh RP, Gardette J-L. Photooxidation of vulcanized EPDM/montmorillonite nanocomposites. Polym Degrad Stab. 2006;91:3033–9. Scholar
  17. 17.
    Le Lay F. Study on the lifetime of EPDM seals in nuclear-powered vessels. Radiat Phys Chem. 2013;84:210–7. Scholar
  18. 18.
    McDonnell D, Balfe N, O’Donnell GE. Analysis of the effects of chemical ageing of ethylene-propylene diene monomer by chemical, spectroscopic, and thermal means. Polym Test. 2018;65:116–24. Scholar
  19. 19.
    Bernstein R, Thornberg SM, Irwin AN, Hochrein JM, Derzon DK, Klamo SB, Clough RL. Radiation oxidation mechanism: volatile organic degradation products from polypropylene having selective C-13 labelling studied by GC/MS. Polym Degrad Stab. 2008;93:854–70. Scholar
  20. 20.
    Ning NY, Ma Q, Zhang YQ, Zhang LQ, Wu HU, Tian M. Enhanced thermos-oxidative ageing resistance of EPDM at high temperature by using synergistic antioxidants. Polym Degrad Stab. 2014;102:1–8. Scholar
  21. 21.
    Blanco I, Abate L, Bottino FA, Bottino P. Synthesis, characterization and thermal stability of new dumbbell-shaped isobutyl-substituted POSSs linked by aromatic bridges. J Therm Anal Calorim. 2014;117:243–50. Scholar
  22. 22.
    Blanco I, Abate L, Bottino FA. Variously substituted phenyl hepta cyclopentyl-polyhedral oligomeric sisesquioxane (ph, hcp-POSS)/polystyrene (PS) nanocomposites: the influence of substituents on the thermal stability. J Therm Anal Calorim. 2014;117:243–50. Scholar
  23. 23.
    Zaharescu T, Pielikowski K. Stabilization effect of POSS nanoparticles on gamma-irradiated polyurethanes. J Therm Anal Calorim. 2016;124:767–74. Scholar
  24. 24.
    Majka TM, Raftopoulos KN, Pielikowski K. The influence of POSS nanoparticles on selected thermal properties of polyurethane-baseb hybrids. J Therm Anal Calorim. 2018;133:289–301. Scholar
  25. 25.
    Carlsson DJ, Dobbin CJB, Wiles DM. Direct observations of macroperoxyl radical propagation and termination by electron spin resonance and infrared spectroscopies. Macromolecules. 1985;18:2092–4. Scholar
  26. 26.
    Rivaton A, Cambon S, Gardette J-L. Radiochemical ageing of EPDM elastomers. 2. Identification and quantification of chemical changes in EPDM and EPR films γ-irradiated under oxygen atmosphere. Nucl Instrum Methods B. 2005;227:3343–56. Scholar
  27. 27.
    Rivaton A, Cambon S, Gardette J-L. Radiochemical ageing of EPDM elastomers. 3. Radiochemical ageing of EPDM. Mechanism of rdaiooxidation. Nucl Instrum Methods B. 2005;227:357–68. Scholar
  28. 28.
    Von Sonntag C, Bothe E, Ulanki P, Adhikary A. Radical transfer reactions in polymers. Radiat Phys Chem. 1999;55:599–603. Scholar
  29. 29.
    Gardette M, Thérias S, Gardette J-L, Janecska T, Földes E, Pukánszky B. Photo- and thermal oxidation of polyethylene: comparison of mechanisms and influence of unsaturation content. Polym Degrad Stab. 2013;98:2383–90. Scholar
  30. 30.
    Zaharescu T, Jipa S, Setnescu R, Setnescu T. Radiation processing of polyolefin blends. Part I. Crosslinking of EPDM/PP blends. J Appl Polym Sci. 2000;77:982–7.<982::AID-APP4.3.0.CO;2-F.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.INCDIE ICPE CABucharestRomania

Personalised recommendations