Radical polymerization of methyl methacrylate (MMA) by captodatively substituted morpholino succinonitrile was studied kinetically at 90 and 130°C by comparison with that of styrene. The polymerizations of MMA and styrene at 90°C proceeded at moderate rates to give polymers which show unimodal size exclusion chromatography (SEC) curves. Both polymerizations at 130°C were significantly fast to give polymers with bimodal SEC curve. A higher molecular weight fraction of the obtained polymer may mostly formed by a spontaneous thermal polymerization in styrene polymerization, but in MMA polymerization produced mainly by dissociation of the domant species. The rate constant of the activation of captodative-capped poly(MMA) domant was smaller than that reported for nitroxide-mediated styrene polymerization.
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Tanaka, H., Tezuka, Y. & Fujita, Ki. Radical Polymerization of Methyl Methacrylate by Captodative Substituted Morpholino Succinonitrile. Polym J 32, 711–715 (2000). https://doi.org/10.1295/polymj.32.711
- Radical Polymerization
- Captodative Substitution
- Radical Initiator
- Bimodal Size Exclusion Chromatography Curve
- Morpholino Succinonitrile
- Methyl Methacrylate