Abstract
AbstractGC‐MS analysis of oligomers obtained by using a high concentration of chain transfer agents permits the identification and determination of the concentrations of all the compounds formed in the early propagation steps. From these data the exact structure of the starting chain end and the evaluation of a series of kinetic and probabilistic parameters can be obtained, thus allowing a more detailed description of the polymerization mechanism. Applying this method to the copolymerization of styrene (1) and methyl methacrylate (2), a value of 6 was obtained for the ratio of the reinitiation rate constants kr1/kr2 in the presence of 1‐butanethiol at 60°C.
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