The effect of silicon dioxide concentration on thermodynamic properties of polystyrene-based composites
| Autor: | Andrew V. Noskov, S. S. Guseinov, Alexander V. Agafonov, Olga V. Alekseeva |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Silicon dioxide Organic Chemistry Intermolecular force Composite number Metals and Alloys Polymer Surfaces Coatings and Films chemistry.chemical_compound Differential scanning calorimetry chemistry Metallic materials Materials Chemistry Polystyrene Composite material Glass transition |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 51:253-256 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205115020033 |
| Popis: | Sol-gel synthesis of a silicon dioxide powder is carried out. The samples of polystyrene/silicon dioxide film composites with different concentrations of the filling agent are obtained. Studies using differential scanning calorimetry show that the dependence of the glass transition temperature of the composite on the composition is nonmonotonic with a minimum at 1 wt % SiO2. It is concluded that there is a plasticizing action of small (less than 1 wt %) amounts of silica and a predominant effect of intermolecular interactions of the filling agent with the polymer at high SiO2 concentrations (more than 1 wt %) are concluded. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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