Abstract
Photo-polymerization and -copolymerization of three aromatic diacrylates, i.e., o−, m−, and p-phenylene diacrylates were investigated in order to elucidate the reactivity of the double bond of α,β-unsaturated carbonyl compounds toward light. Photopolymerizability of p-phenylene diacrylate was highest among these three diacrylates, and it yielded rapidly a cross-linked polymer on irradiation with a high-pressure mercury lamp in tetrahydrofuran solution. Activation energies of photopolymerization of these three diacrylates were much lower than those of thermal polymerization with a radical initiator. Photopolymerization of o-phenylene diacrylate-induced cyclopolymerization, yielding a ladder-type polymer with a high inherent-viscosity.o-Phenylene diacrylate and styrene copolymerized and formed a soluble copolymer on irradiation of light.
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Azuma, C., Ogata, N. Photo-polymerization and -copolymerization of Aromatic Diacrylates. Polym J 4, 628–636 (1973). https://doi.org/10.1295/polymj.4.628
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DOI: https://doi.org/10.1295/polymj.4.628