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ESR study on radical polymerization of styrene

2. Propagation rate constant of polystyrene radical with different molecular weights

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Summary

Propagation rate constant (kp) for styrene was evaluated at different chain lengths of the polymer radical based on the steady-state concentration of the polymer radical determined by means of ESR spectroscopy at 70°C. Over a range of degree of polymerization of the polymer radical from 40 to 410, the value of kp, 480±10 L/mol·s, remained constant. A considerable increase in viscosity of the polymerization mixture did not affect this value.

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Authors and Affiliations

  1. Department of Applied Chemistry, Faculty of Engineering, Osaka City University, Sugimoto, Sumiyoshi-ku, 558, Osaka, Japan

    Bunichiro Yamada, Masakazu Kageoka & Takayuki Otsu

Authors
  1. Bunichiro Yamada
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  2. Masakazu Kageoka
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  3. Takayuki Otsu
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Yamada, B., Kageoka, M. & Otsu, T. ESR study on radical polymerization of styrene. Polymer Bulletin 28, 75–80 (1992). https://doi.org/10.1007/BF01045641

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  • DOI: https://doi.org/10.1007/BF01045641

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