The compression and heat liberates free radicals by decomposing one or more peroxides, which may initiate {HEAD ~ the cis} to {TAIL ~ trans conversion} and crosslinking simultaneously 
to
The compression and heat liberates free radicals by decomposing one or more peroxides , which may initiate { HEAD ~ the cis } to { TAIL ~ trans conversion } and crosslinking simultaneously
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH