Half-sandwich samarium (III) diketiminate bromide as a catalyst for methyl methacrylate polymerization
| Autor: | Wanda de Oliveira, Roberto Bineli Muterle, Fabio Fabri, Ulf Schuchardt |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Molar mass Polymers and Plastics Organic Chemistry technology industry and agriculture food and beverages chemistry.chemical_element Solution polymerization Polymer Samarium chemistry.chemical_compound chemistry Polymerization Bromide Polymer chemistry Materials Chemistry Molar mass distribution Methyl methacrylate |
| Zdroj: | Polymer. 47:4544-4548 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2006.04.055 |
| Popis: | Half-sandwich samarium(III) diketiminate bromide was successfully synthesized and was shown to be active in methyl methacrylate (MMA) polymerization. The effects of temperature, polymerization time and catalyst concentration were studied. Activities of ca. 18 kg of polymethacrylate (PMMA) per mol of samarium per hour were obtained under optimum conditions (0 °C and a MMA/catalyst molar ratio of 100/1), giving a polymer with a molar mass Mn>24,000 g mol−1 and a molar mass distribution (Mw/Mn) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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