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Polymerisationsauslösung mit substituierten ethanen, 4. Kinetik der polymerisation von methylmethacrylat mit 1,1,2,2-tetraphenyl-1,2-diphenoxyethan

✍ Scribed by Błedzki, Andrzej ;Balard, Henri ;Braun, Dietrich


Publisher
Wiley (John Wiley & Sons)
Year
1981
Weight
492 KB
Volume
182
Category
Article
ISSN
0025-116X

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✦ Synopsis


Abstract

The polymerisation of methyl methacrylate (MMA) by 1,1,2,2‐tetraphenyl‐1,2‐diphenoxyethane is characterised by three steps: during the initial period oligomers from MMA and initiator radicals are formed by primary radical termination. These oligomers produce free macroradicals and initiator radicals by cleavage at the bonds between the last monomer unit and the end group from the initiator. After consumption of the initiator radicals with increasing conversion the normal propagation and termination processes occur. The kinetics derived from this reaction scheme is in good agreement with the experimental results.


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