Premium
Photosensitized cationic polymerization using allyl sulfonium salt
Author(s) -
Denizligil Selcuk,
Resul Rezan,
Yagci Yusuf,
Mc Ardle Ciaran,
Fouassier JeanPierre
Publication year - 1996
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1996.021970405
Subject(s) - cationic polymerization , sulfonium , chemistry , polymer chemistry , vinyl ether , hydrogen atom abstraction , benzophenone , photochemistry , polymerization , thioxanthone , living cationic polymerization , radical , photopolymer , monomer , salt (chemistry) , organic chemistry , polymer
The cationic polymerization of cyclic ethers such as cyclohexane oxide (CHO) and vinyl monomers such as butyl vinyl ether (BVE) and N ‐vinylcarbazole (NVC) is initiated upon irradiation at λ 380 nm in CH 2 Cl 2 solution containing an allylic sulfonium salt, namely, 2‐ethoxycarbonyl‐2‐propenylthiophenium hexafluoroantimonate ( 1 ) (EMT + SbF 6 − ), and one of the following compounds: benzophenone, anthracene, thioxanthone, perylene or phenothiazine. Electron transfer and hydrogen abstraction mechanisms were proposed for the initiation step. Stable cation radicals of phenothiazine were also prepared, and the cationic polymerization of butyl vinyl ether was initiated by these cation radicals.