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Polymerization photoinitiated by carbonyl compounds. XI. Styrene polymerization photoinitiated by cyclododecanones

✍ Scribed by M. Biondic; S. Giacopello; R. Erra Bassells; M. V. Encinas; E. A. Lissi

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
296 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis

SYNOPSIS

T o establish their potential as source of biradicals to initiate free-radical polymerization, 2-methyl-and Z,Z,lZ-trimethylcyclododecanones were photolyzed in the presence of styrene. The initiation efficiency of both ketones is low-0.03. The molecular weight of the obtained polymer is ca. 25% higher than that obtained employing photoinitiators that produce monoradicals. This difference is explained in terms of a mixed polymerization mechanism comprising mono-and biradicals.

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