Synthesis and photopolymerization characterization of a novel difunctional photoinitiator |
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| Authors: | Pu Xiao Mingzhi Dai Jun Nie |
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| Affiliation: | 1. Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China;2. State Key Lab of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China |
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| Abstract: | A novel difunctional photoinitiator HBP‐TDI‐HBP based on 4‐hydroxybenzophenone (HBP) and toluene‐2,4‐diisocyanate (TDI) was synthesized and characterized by 1H NMR and UV–Vis absorption spectroscopy. The kinetics of photopolymerization was studied by real‐time infrared spectroscopy. It showed that HBP‐TDI‐HBP was a more effective photoinitiator than benzophenone. When this photointiator and amine were used to efficiently initiate polymerization of acrylates and methacrylates, both rate of polymerization and final conversion increased with increase of HBP‐TDI‐HBP concentration, light intensity, and amine concentration. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | initiators UV– Vis spectroscopy FTIR kinetics photopolymerization |
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