期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 44, 期 23, 页码 6750-6764出版社
WILEY
DOI: 10.1002/pola.21791
关键词
cationic polymerization; epoxides; inhibition; photopolymerization; ring-opening polymerization; thermosets
Selective inhibition of the photoinitiated cationic ring-opening polymerization of epoxides by dialkyl sulfides has provided dual systems that can be activated by UV irradiation and then subsequently be polymerized by the application of heat. It is proposed that dialkyl sulfides terminate the initial or growing polyether chains at an early stage to form stable trialkylsulfonium salts. These systems are dormant at room temperature but on thermolysis, the sulfonium salts are capable of reinitiating ring-opening polymerization. These dual photo- and thermal cure systems have potential applications in adhesives, potting resins, and composites. (c) 2006 Wiley Periodicals, Inc.
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