Abstract
The photopolymerization of pentaerythrol triacrylate and its chloroacetyl derivative under the action of visible light in the presence of a camphorquinone initiator was studied in real time. Photopolymerization occurred at a low rate with a 40% monomer conversion. The introduction of the chloroacetate group accelerated polymerization only insignificantly, but monomer conversion remained unchanged. The use of donor-acceptor initiating systems (tert-aminocamphorquinone) increased the rate of polymerization by approximately an order of magnitude. The main reason for this effect was an increase in the quantum yield of initiator photodissociation in the presence of tert-amines. The rate of the polymerization of monomers did not correlate with the ionization potentials of amines and, therefore, the rate of radical generation. The camphorquinone-amine system formed a quaternary salt with pentaerythrol triacrylatechloroacetate. This salt hindered exciplex formation.
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Original Russian Text © G.V. Lyubimova, V.T. Shashkova, A.V. Lyubimov, B.I. Zapadinskii, 2010, published in Khimicheskaya Fizika, 2010, Vol. 29, No. 4, pp. 84–89.
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Lyubimova, G.V., Shashkova, V.T., Lyubimov, A.V. et al. The polymerization of acryl pentaerythrol derivatives initiated by visible light. Russ. J. Phys. Chem. B 4, 334–339 (2010). https://doi.org/10.1134/S199079311002020X
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DOI: https://doi.org/10.1134/S199079311002020X