Controlled Electroinduced Polymerization of Methyl Methacrylate in the Presence of Catalytic Amount of Cerium(IV)
| Autor: | Serife Ozkara, Belkıs Ustamehmetoğlu, A. Sezai Sarac, Esma Sezer |
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| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Reaction mechanism Polymers and Plastics technology industry and agriculture chemistry.chemical_element macromolecular substances General Chemistry Polymer Catalysis Solvent chemistry.chemical_compound Cerium Monomer Polymerization chemistry Polymer chemistry Materials Chemistry Ceramics and Composites Methyl methacrylate Nuclear chemistry |
| Zdroj: | Journal of Macromolecular Science, Part A. 40:193-207 |
| ISSN: | 1520-5738 1060-1325 |
| DOI: | 10.1081/ma-120017260 |
| Popis: | By using the advantage of the electroinduced system being ecologically preferred system to chemical polymerizations, controlled electroinduced Methyl methacrylate (MMA) polymerization was realized with high yields and in short period of times by the use of catalytic amount of cerium(IV) [Ce(IV)] which is continuously regenerated. Progress of polymerization was followed electrochemically (cyclovoltametry, CV) and spectrophotometrically(Uv–vis spectrophotometry, by the absorbance changes of catalyst). Electroinduced polymerization of methyl methacrylate (MMA) in the presence of Ce(IV), which allows Ce(III) to be converted to Ce(IV) electrochemically during polymerization due to fast electron transfer rate of Ce(IV)/Ce(III) redox system was performed, comparatively chemical method (oxidative). The effect of Ce(IV), monomer and sulphuric acid concentration, temperature, time, air, light and solvent on the polymerization yield was studied and compared with nonelectrolytic conditions. Resulting polymers were ch... |
| Databáze: | OpenAIRE |
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