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 language | English |
|---|---|
| Pages (from-to) | 458-462 |
| Number of pages | 5 |
| Journal | KGK-KAUTSCHUK GUMMI KUNSTSTOFFE |
| Volume | 62 |
| Issue number | 9 |
| Publication status | Published - Sept 2009 |
Keywords
- EPDM
- Peroxide
- Crosslinking
- Structure
- Mechanism
- MOLECULAR-WEIGHT MODEL
- COMBINATION REACTIONS
- GAS-CHROMATOGRAPHY
- MASS-SPECTROMETRY
- EFFICIENCY