Kinetic study of the photo-induced copolymerization of N -substituted maleimides with electron donor monomers

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Polymer, ISSN: 0032-3861, Vol: 40, Issue: 9, Page: 2447-2454

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Morel, F.; Decker, C.; Jönsson, Sonny; Clark, S.C.; Hoyle, Charles E.
Elsevier BV
Chemistry; Materials Science; polymerization; maleimide; vinyl ether; Physical Sciences and Mathematics
article description
The photo-induced copolymerization of electron donor/electron acceptor monomers has been studied by real-time infrared spectroscopy. With maleimide/vinyl ether mixtures, the reaction was found to proceed rapidly upon u.v. exposure in the absence of oxygen to reach nearly 100% conversion within seconds. The two monomers disappeared at similar rates, with formation of an alternating copolymer. Similar results were obtained with maleimide/ N -vinylpyrrolidone and maleimide/styryloxy combinations. Highly crosslinked polymer networks have been produced by photo-induced copolymerization of bis-maleimide and divinyl ether monomers. These photoinitiator-free formulations were found to be less sensitive to oxygen inhibition than typical u.v.-curable acrylate resins. N -substituted maleimides were also shown to act as monomeric photoinitiators by inducing the polymerization of acrylate monomers upon u.v. irradiation.