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1. Benzophenone/triethylamine-photoinitiated polymerization of methyl acrylate

Author

C. L. Osborn, David J. Trecker, and M. R. Sandner

Subjects
chemistry.chemical_compound, Ketyl, Photopolymer, chemistry, Polymerization, Radical, Polymer chemistry, General Engineering, Benzophenone, Triplet state, Methyl acrylate, Photochemistry, Triethylamine
Abstract

Benzophenone-sensitized photopolymerization of methyl acrylate was shown to be remarkably enhanced by the addition of small amounts of triethylamine. This was attributed to the efficient formation of an electron-transfer complex between photoactivated benzophenone and ground-state amine. Ketyl and amine free radicals derived from this complex were postulated to be the chain-initiating species. Quantum yield experiments indicated that methyl acrylate itself was also a quencher of the benzophenone triplet state.

Published
1972

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