Characterization of polydihydrosilane by SEC-MALLS and viscometry
| Autor: | Takashi Masuda, Tatsuya Shimoda, Yasuo Matsuki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
SEC-MALLS Molar mass Polymers and Plastics Silicon polydihydrosilane Intrinsic viscosity Organic Chemistry Viscometer chemistry.chemical_element Thermodynamics Polymer Polymerization chemistry cyclopentasilane Polymer chemistry Materials Chemistry Radius of gyration Molar mass distribution |
| Zdroj: | Polymer. 53(14):2973-2978 |
| ISSN: | 0032-3861 |
| Popis: | Silicon hydride compounds consisting of silicon and hydrogen constitute a fascinating class of silicon-based polymers because of their ability to form high-quality silicon film by solution-based process. In this study, we synthesize polydihydrosilane by photo-induced ring-opening polymerization of cyclopentasilane, and determine the molar mass, radius of gyration, and intrinsic viscosity of it in cyclohexene by size-exclusion chromatography combined with multi-angle laser light scattering and viscometry. It was found that the molar mass of polydihydrosilane ranges broadly from 102 to 106 g/mol. Both the intrinsic viscosity and radius of gyration exhibited a scaling behavior with respect to the molar mass with the intrinsic viscosity exponent α = 0.206 and radius of gyration exponent ν = 0.410. Classification of the polymer structure based on the α value suggests that the polydihydrosilane forms a branched-chain structure with a particle-like compact shape rather than a straight chain. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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