期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 293, 期 9, 页码 731-739出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.200800137
关键词
cationic; DMA; hybrid; photopolymerization; thiol-ene
资金
- Mexican National Council of Science and Technology (CONACYT)
Novel materials were prepared from dual photo and thermal polymerization of hybrid thiolene/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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