The Cure Kinetics of Sulfonium Salt UV Cationic Photoinitiator/Epoxy System

The cationic photoinitiator S,S-dialkyl-S-(3,5-dimethyl-4-hydroxyphenyl) sulfonium (called 4HPS simply) was synthesized in this article. The synthesis was proved successfully through FT-IR spectrum, 1H-NMR, and elemental analysis. The cure kinetics of photoinitiator/ ZH92-21 were studied through FT-...

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Bibliographic Details
Published in:Journal of reinforced plastics and composites 2009-03, Vol.28 (4), p.499-507
Main Authors: Liu, Yuyan, Jing, Xianghai, Ren, Zhong, Du, Xingwen
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Physicochemistry of polymers
Polymerization
Polymers and radiations
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Summary:The cationic photoinitiator S,S-dialkyl-S-(3,5-dimethyl-4-hydroxyphenyl) sulfonium (called 4HPS simply) was synthesized in this article. The synthesis was proved successfully through FT-IR spectrum, 1H-NMR, and elemental analysis. The cure kinetics of photoinitiator/ ZH92-21 were studied through FT-IR spectrum combined with a high pressure mercury lamp. The concentrations of residual epoxy group, curing rate Rp and kinetics of polymerize termination were discussed. The results showed that the cure termination reaction of HPS photoinitiator/ZH92-21 was diradical-termination.
ISSN:0731-6844
1530-7964
DOI:10.1177/0731684407086591