ChemInform Abstract: Novel Polysilamethylenosilanes; New Precursors for Silicon Carbide
| Autor: | Seung-Ho Yeon, Il Nam Jung, Gyu-Hwan Lee, Mi-Yeon Suk |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
endocrine system endocrine system diseases Molecular mass Chemistry Dimethyldichlorosilane General Medicine Polymer Gel permeation chromatography chemistry.chemical_compound visual_art Mole Silicon carbide visual_art.visual_art_medium Organic chemistry Gravimetric analysis Ceramic hormones hormone substitutes and hormone antagonists Nuclear chemistry |
| Zdroj: | ChemInform. 23 |
| ISSN: | 0931-7597 |
| DOI: | 10.1002/chin.199222208 |
| Popis: | Novel polysilamethylenosilanes (PSMS) were prepared by Wurtz type co-condensation of various mixtures of 2,4,4,6-tetrachloro-2,6-dimethyl-2,4,6-trisilahept ane (TSH) and dimethyldichlorosilane (D). When TSH was incorporated more than 25 mole%, PSMS polymers were soluble in common organic solvents probably due to the polycarbosilane linkage brought from TSH. The molecular weights of the polymer were measured by gel permeation chromatography and showed higher molecular weight with high TSH content. The thermal gravimetric residues increased as TSH contents increased. These properties suggested that PSMS polymers could be useful as ceramic precursors for silicon carbide. |
| Databáze: | OpenAIRE |
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