Mechanism of Peroxide Crosslinking of EPDM Rubber

M. van Duin, R. Peters, R. Orza, V. Chechik

Research output: Contribution to journalArticlepeer-review

Abstract

The results of three experimental studies, i.e. GC-MS of peroxide-crosslinked alkene/alkane mixtures, C-13 NMR of peroxide-cured, C-13-labeled ENB-EPDM and EPR of peroxide curing of EPDM, are combined, yielding a more accurate description of the mechanism of peroxide cure of EPDM. Both alkyl and allyl macro-radicals are formed via H-abstraction from the EPM main chain and the residual diene unsaturation, respectively. Combination of these macro-radicals yields alkyl/alkyl, alkyl/allyl and allyl/allyl crosslinks and addition of these macro-radicals to the residual diene unsaturation yields alkyl/alkene and allyl/alkene crosslinks.

Original languageEnglish
Pages (from-to)458-462
Number of pages5
JournalKGK-KAUTSCHUK GUMMI KUNSTSTOFFE
Volume62
Issue number9
Publication statusPublished - Sept 2009

Keywords

  • EPDM
  • Peroxide
  • Crosslinking
  • Structure
  • Mechanism
  • MOLECULAR-WEIGHT MODEL
  • COMBINATION REACTIONS
  • GAS-CHROMATOGRAPHY
  • MASS-SPECTROMETRY
  • EFFICIENCY

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