Thiol-ene free-radical and vinyl ether cationic hybrid photopolymerization

Huanyu Wei, Qin Li, Moriam Ojelade, Samy Madbouly, Joshua U. Otaigbe, Charles E. Hoyle

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32 Scopus citations

Abstract

The photopolymerization kinetics of mixtures containing a trithiol and a trivinyl ether (in different molar ratios) with a cationic photoinitiator were investigated by real-time infrared and real-time rheology. Using this combination of real-time methods to follow both chemical conversion and Theological property development, a clear picture of physical property development during the complete polymerization process is obtained. This represents the first example of a thiol-ene radical/ene cationic two-step hybrid photopolymerization process in which thiol copolymerizes with vinyl ether functional groups in a rapid radical step growth process followed by vinyl ether cationic homopolymerization. The sequential thiol-vinyl ether copolymerization and the vinyl ether cationic polymerization result in cross-linked networks with thermal and mechanical properties that are combinations of each system.

Original languageEnglish (US)
Pages (from-to)8788-8793
Number of pages6
JournalMacromolecules
Volume40
Issue number24
DOIs
StatePublished - Nov 27 2007

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All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Wei, H., Li, Q., Ojelade, M., Madbouly, S., Otaigbe, J. U., & Hoyle, C. E. (2007). Thiol-ene free-radical and vinyl ether cationic hybrid photopolymerization. Macromolecules, 40(24), 8788-8793. https://doi.org/10.1021/ma071131o