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Structure and reactivity of addition fragmentation agents in photochemically and thermally induced cationic polymerization
Author(s) -
Yagci Yusuf,
Onen Aysen,
Reetz Ivo
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200109)174:1<255::aid-masy255>3.0.co;2-k
Subject(s) - cationic polymerization , allylic rearrangement , chemistry , substituent , polymerization , reactivity (psychology) , fragmentation (computing) , onium , photochemistry , polymer chemistry , radical polymerization , organic chemistry , polymer , ion , catalysis , medicine , alternative medicine , pathology , computer science , operating system
Specially designed allylic onium salts with different hetero‐atoms and various substituent patterns at the allylic double bond have been shown to be very efficient initiators for cationic polymerization. They can be used alone or in conjunction with radical initiators. The mechanism of initiation involves radical formation, radical addition and fragmentation. In some cases, oxidation reactions were found to contribute to the formation of initiating species. In this work, the role of structural parameters onto reactivity is discussed.