Synthesis of high molecular weight poly(methyl methacrylate) with extremely low polydispersity by the unique function of organolanthanide(III) complexes
| Autor: | Kiyohiko Yokota, Nobuko Kanehisa, Masahiro Yamashita, Shigenobu Miyake, Yasushi Kai, Akira Nakamura, Hajime Yasuda, Hitoshi Yamamoto |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Hydride Chemistry Organic Chemistry Dispersity chemistry.chemical_element Polymer Methacrylate Poly(methyl methacrylate) Inorganic Chemistry Samarium chemistry.chemical_compound Polymerization visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Metallocene |
| Zdroj: | Macromolecules. 26:7134-7143 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma00078a004 |
| Popis: | Polymerizations of methyl methacrylates by bis(pentamethylcyclopentadienyl)samarium hydride, [Sm(C 5 Me 5 ) 2 H] 2 , in toluene were found to afford the polymers of M n > 100×10 3 with extremely low polydispersity, M w /M n = 1.02. The polymerization is estimated to proceed in a living fashion. Highly syndiotactic polymerization (95.3%) proceeded by lowering the reaction temperature to -95°C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|