Vinyl Polymerization. 274. Polymerization of Acrylonitrile Initiated by the System Tetramethyl Tetrazene and Co(II) Chloride |
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| Authors: | Kazuo Sugiyama Tadao Nakaya Minoru Imoto |
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| Institution: | Osaka City University, Faculty of Engineering , Sugimoto-cho, Sumiyoshi-ku, Osaka, Japan |
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| Abstract: | Abstract The binary system of tetramethyl tetrazene (TMT) and Co(II) chloride was used as initiator of acrylonitrile (AN) in dimethylformamide. The initial rate of polymerization (Rp) was found to be expressed by Rp = kTMT]0.62Co(II) chloride]0.57 AN]2.00 The polymerization was confirmed to proceed via a radical mechanism. The over-all activation energy for the polymerization was estimated as 15.1 kcal/mole. On the basis of these results and the product analysis of the reaction between the catalyst components in the absence of monomer, the initiation mechanism of the polymerization is discussed. |
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