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Addition–Fragmentation Reactions for Cationic Polymerization using a Novel Allyloxy‐picolinium Salt
Author(s) -
Reetz Ivo,
Bacak Vildan,
Yagci Yusuf
Publication year - 1997
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199705)43:1<27::aid-pi743>3.0.co;2-5
Subject(s) - cationic polymerization , polymerization , cyclohexene oxide , chemistry , photopolymer , polymer chemistry , monomer , benzoin , chain transfer , radical polymerization , photochemistry , ring opening polymerization , reversible addition−fragmentation chain transfer polymerization , ionic polymerization , bulk polymerization , cyclohexene , organic chemistry , polymer , catalysis
Abstract A novel allyloxy‐picolinium salt, N ‐[2‐(methyl)allyloxy]‐α‐picolinium hexafluoroantimonate, has been synthesized and used as addition–fragmentation agent for radical promoted thermal and photochemical cationic polymerization of monomers such as cyclohexene oxide, p ‐methoxystyrene and various vinyl ethers. Polymerization by heat was achieved using the allylic salt in conjunction with benzoyl peroxide (BPO), phenylazotriphenylmethane (PAT) and 2‐2′‐azobis‐isobutyronitrile (AIBN). Polymerization rates were found to drop in the order PAT>BPO>AIBN. Photopolymerization was carried out by irradiating the allyloxy‐picolinium salt in the presence of monomer at 280nm. Upon adding benzoin as free radical source, the spectral response was extended to 370nm. The initiation mechanism is explained in terms of an addition–fragmentation scheme. © 1997 SCI.