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Photopolymerization of methyl methacrylate using a combination of michler's ketone and benzoyl peroxide as photoinitiator

✍ Scribed by Premamoy Ghosh; Samir Biswas; Utpal Niyogi

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 654 KB
Volume: 25
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(89)90095-5

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✦ Synopsis

A combination of Michler's ketone and benzoyl peroxide was used as photoinitiator for photopolymerization of methyl methacrylate at 40". Spectrophotometric analysis indicated equilibrium complexation between the initiator components; the complex is considered to be the actual initiating species, giving free radicals by photo-decomposition.

The observed initiator exponent of 0.21 and monomer exponent of > I in various solvents reveal non-ideality in the photopolymerization kinetics. The non-idealities are interpreted in terms of initiator dependent chain termination mainly by primary radicals, in addition to the usual bimolecular termination.

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