The kinetic chain length of a polymer is defined as the :
MH SET - 2019, SET Exam - 2019,
Answer: A
The kinetic chain length is the number of monomer units consumed per active center.
In chain polymerization, the kinetic chain length ν is the average number of monomer molecules that add to a chain, per active centre (radical) initiated, before that centre is destroyed by termination. It equals the rate of propagation divided by the rate of initiation (or of termination, in the steady state): ν = Rp/Ri.
A number consumed per unit time is a rate, not a chain length, and dividing by concentration gives a quantity with different units. The degree of polymerization is related to ν: it equals ν for termination by disproportionation and 2ν for termination by combination.
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