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Development of Hybrid Polymeric Materials Based on Thiol-Ene/Cationic Formulations

✍ Scribed by Ricardo Acosta Ortiz; Bertha A. Puente Urbina; Ramiro Guerrero Santos; Lydia Berlanga Duarte; Aída E. García Valdez; Mark D. Soucek

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
553 KB
Volume
293
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Novel materials were prepared from dual photo and thermal polymerization of hybrid thiol‐ene/cationic systems. In the first stage, the thiol‐ene system proceeded to high conversions, while the cationic photopolymerization was inhibited. The formation of sulfides during this stage was the main factor for the inhibition of the cationic photopolymerization of the epoxy monomers. Once those sulfides were formed, they reacted with the oxonium‐terminated growing polyether chains to form trialkylsulfonium salts. These salts promoted the thermal polymerization of the epoxy monomers in the second stage. The viscoelastic properties of the resulting polymers were measured by DMA.

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