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Chain‐length dependent termination in pulsed‐laser polymerization, 1. Interaction with propagation
Author(s) -
Olaj Oskar Friedrich,
Kornherr Andreas,
Zifferer Gerhard
Publication year - 1997
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.1997.040060305
Subject(s) - chain propagation , dispersity , chain (unit) , polymerization , chain termination , poisson distribution , constant (computer programming) , materials science , chemistry , polymer chemistry , physics , mathematics , polymer , radical polymerization , composite material , statistics , quantum mechanics , computer science , programming language
Using a new simulation procedure in which each individual propagation step is subjected to a Poisson process it was proved that in case of chain‐length dependent termination the apparent rate of propagation no longer coincides with the true one. This is caused by the polydispersity of the chain‐length distribution of the growing chains: shorter chains are removed preferentially. This effect is comparatively small although significant. The consequences for the determination of the rate constant of chain propagation k p are nearly negligible.