The overall specific rate constant for the termination step may be written as :
Combining both termination mechanisms leads to the overall specific rate constant for the termination step given by Eq.
They consider the individual initiation, propagation, and termination steps with different degrees of sophistication, but they do not contain any information about the structure of the generated polymer network.
As inferred from the results of dynamic DSC runs, a termination step accounting for the consumption of active species must be also present in the reaction mechanism.
The presence of termination steps leading to inactive species is still a matter of debate.
The chain entanglement effects in the termination step are also accounted for.
The increase in molecular weight with flow rate is primarily due to the higher monomer concentrations for the higher flow rates (lower conversions) which result in acceleration of the propagation reaction relative to the termination step.
Among several possible termination steps
in which free radicals can react with each other with a certain probability after a certain number of cycles in the propagation step, the depicted termination steps
render an electronically excited carbonyl group RO *.
He detailed the chemistries and cure mechanisms involving initiation, propagation, and termination steps
during the curing process.