Photosensitized cationic polymerization using allyl sulfonium salt

DENIZLIGIL S., RESUL R., Yagci Y., MCARDLE C., FOUASSIER J.

MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.197, sa.4, ss.1233-1240, 1996 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 197 Sayı: 4
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1002/macp.1996.021970405
  • Dergi Adı: MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1233-1240
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

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 lambda 380 nm in CH2Cl2 solution containing an allylic sulfonium salt, namely, 2-ethoxycarbonyl-2-propenylthiophenium hexafluoroantimonate (1) (EMT(+) SbF6-), 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.