Diethoxy-azobis(pyridinium) salt as photoinitiator for cationic polymerization
Küçük Resim Yok
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
N,N'-diethoxy-4,4'-azobis(pyridinium) hexafluorophosphate (DEAP) has been synthesized by alkylation of the corresponding N-oxide and characterized. DEAP exhibits UV induced cis-trans isomerization with absorptions at around lambda = 459 and 360 nm, respectively. The ability of the DEAP ion to act as a photoinitiator for the cationic polymerization of cyclohexene oxide and N-vinylcarbazole is demonstrated. The initiation step involves the decay of the excited state of the trans form of the salt with homolytic bond rupture of the nitrogen-oxygen bond. Its potential use as a photoinitiator for free radical polymerization is also demonstrated using methyl methacrylate monomer as the example.
Açıklama
Anahtar Kelimeler
Alkoxy Pyridinium Salt, Cationic Photopolymerization, Cis-Trans Isomers, Photopolymerization, N-Alkoxy-Pyridinium, Block Copolymerization, Cyclohexene Oxide, Initiators, Dialkylphenacylsulfonium, Polymers, Systems, Light
Kaynak
Macromolecular Rapid Communications
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
29
Sayı
11
