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Photo-living radical polymerization of methyl methacrylate by a nitroxide mediator

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Abstract

The novel photo-living radical polymerization was determined using 4-methoxy-2,2,6,6-tetramethylpiperidine-1-oxyl (MTEMPO) and bis(alkylphenyl)iodonium hexafluorophosphate (BAI) as the photo-acid generator. The polymerization of methyl methacrylate was performed using azobisisobutylonitrile as an initiator in the presence of MTEMPO and BAI at room temperature by irradiation with a high-pressure mercury lamp to produce poly(methyl methacrylate) with a comparatively narrow molecular weight distribution (M w/M n = 1.3–1.7). The polymerization proceeded by a living mechanism based on the fact that the first-order time-conversion plots linearly increased. A linear increase in the plots of the molecular weight versus the conversion also supported the living nature of the polymerization. It was found that MTEMPO had an interaction with the propagation chain end to control the molecular weight, while BAI weakened the interaction of MTEMPO with the propagation chain end to reduce the molecular weight distribution and polymerization time.

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  1. Department of Materials Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan

    Eri Yoshida

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  1. Eri Yoshida
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Correspondence to Eri Yoshida.

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Yoshida, E. Photo-living radical polymerization of methyl methacrylate by a nitroxide mediator. Colloid Polym Sci 286, 1663–1666 (2008). https://doi.org/10.1007/s00396-008-1930-y

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  • DOI: https://doi.org/10.1007/s00396-008-1930-y

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