Chain‐length dependent termination in pulsed‐laser polymerization, 2. On the prospects of determining the bimolecular termination constant kt from the second moment of the chain‐length distribution

The correct (event weighted) average of k t , 〈 k t 〉, has been calculated for pseudostationary laser‐induced polymerization for a kinetic scheme with chain‐length dependent termination and compared to the average k̄ t obtained by formally solving for k t the expression for the second moment of the chain‐length distribution valid for chain‐length independent termination (represented by the product of rate of polymerization ν p and weight average degree of polymerization P̄ w ). It is shown that there is a fair agreement between the two quantities. This may be used to recover experimentally the power‐law governing the dependence of k t on chain‐length, especially its exponent.