Vinyl Polymerization. 287. Polymerization of Methyl Methacrylate Initiated by the Polyacrylonitrile-Water-Cupric Ion System |
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| Authors: | Horng-San Tang Masayoshi Kinoshita Minoru Imoto |
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| Institution: | 1. Faculty of Engineering , Osaka City University Sugimoto-cho , Sumiyoshi-ku, Osaka, Japan;2. Faculty of Engineering , Osaka City University Sugimoto-cho , Sumiyoshi-ku, Osaka, Japan;3. Faculty of Engineering , Kansai University , Senriyama, Suita, Osaka, Japan |
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| Abstract: | Abstract Methyl methacrylate was found to be polymerized by the system polyacrylonitrile-water-cupric ion without any added initiator. Addition of carbon tetrachloride to this system greatly increased the polymerization rate. Acrylonitrile and styrene did not polymerize in this system. The kinetic behavior of polymerization was the same as the system consisting'of cellulose or nylon instead of polyacrylonitrile. When the flaky polyacrylo-nitrile was swelled or dissolved by the solvent DMF, the conversion and the degree of polymerization of the poly-methyl methacrylate formed decreased markedly. Commercial acrylic fiber also initiated polymerization but the activity was lower than with flaky polyacrylonitrile, even after steam treatment, because of the poor permeability of monomer into the fiber. |
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