Abstract
An investigation was undertaken to achieve the graft copolymerization of styrene (St) in the presence of the 9-anthrylmethyl methacrylate/methyl methacrylate copolymer designed as a macromolecular photoinitiator. UV and 1H NMR spectral analyses suggested that about 64% of the anthryl chromophore is rapidly consumed by the intramolecular cycloaddition of this chromophore. However, no additional cycloaddition occurred owing to the greatly lowered conformational mobility of polymer side chains. As a result, the homolytic CH2O–C(=O) bond cleavage in the anthrylmethyloxycarbonyl moiety was induced to form a macroradical which initiates the polymerization of St. While the St homopolymer was produced along with the graft copolymer in our system, these two polymers were readily separated by the use of a Soxhlet extractor.
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Tanaka, K., Uchida, H., Igarashi, T. et al. Graft Photocopolymerization of Styrene with 9-Anthrylmethyl-Substituted Poly(methyl methacrylate). Polym J 37, 754–758 (2005). https://doi.org/10.1295/polymj.37.754
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DOI: https://doi.org/10.1295/polymj.37.754
