Kinetics of the γ-Ray Induced Polymerization of Ethylene in 1,2-Dichlorotetrafluoroethane

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概要

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• The γ-ray induced polymerization of ethylene in bulk or in solution in the presence of 26.9–67.3 g of 1,2-dichlorotetrafluoroethane (R-114) was carried out in a 100-m<I>l</I> reactor under a pressure of 210–400 kg/cm<SUP>2</SUP> and at 30°C, with a dose rate of 1×10<SUP>4</SUP>–9×10<SUP>4</SUP> rad/hr. The rate of the polymerization and the molecular weight of the polymer formed increased with the reaction time and the pressure. The rate also increased upon the addition of an appropriate amount of R-114. On the other hand, the molecular weight decreased with an increase in the amount of R-114. The dose-rate exponents of the rate and the molecular weight were found to be 0.8 and −0.2 respectively. These results were analyzed kinetically, and the rates and the rate constants of the initiation, propagation, transfer, and termination reactions were evaluated. Further, the roles of R-114 in the polymerization were discussed.

• 公益社団法人 日本化学会の論文

著者

• Kagiya Tsutomu

  Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment

• Hagiwara Miyuki

  Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment

• Mitsui Hiroshi

  Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment

• Suganuma Fujio

  Japan Atomic Energy Research Institute, Takasaki Radiation Chemistry Research Establishment

関連論文

• Effects of Alkyl Halides on the γ-Ray Induced Polymerization of Ethylene in Liquid Carbon Dioxide
• Kinetics of the γ-Ray Induced Polymerization of Ethylene in 1,2-Dichlorotetrafluoroethane

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