Catalytic Action of Metallic Salts in Autoxidation and Polymerization. VII. Polymerization of Methyl Methacrylate by Cobalt(ll) or (III) Acetylacetonate-Dioxane Hydroperoxide |
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| Authors: | Zenjiro Osawa Kenji Kobayashi Yoshitaka Ogiwara |
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| Institution: | Department of Polymer Chemistry Faculty of Engineering , Gunma University , Kiryu City, Gunma, Japan |
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| Abstract: | Abstract Polymerization of methyl methacrylate by Co(II or III) acetylacetonate-dioxane hydroperoxide abbreviated as Co(acac)2, Co(acac)3, and DOX HPO, respectively] was carried out in dioxane solvent, and the differences in polymerization rate and the degree of polymerization between two initiating systems were compared. Co(acac)2-DOX HPO for the initiation of the polymerization system was more effective than Co(acac)3-DOX HPO. The polymerization rate equations for both initiating systems obtained from kinetic data were as follows. For Co(acac)2-DOX HPO initiating system: Rp=k M]3/2Co(acac)2]1/7DOX HPO]? |
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