Polystyrene nanocomposites based on quinolinium and pyridinium surfactants
| Autor: | Dongyan Wang, Grace Chigwada, Charles A. Wilkie |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
inorganic chemicals
chemistry.chemical_classification Thermogravimetric analysis Nanocomposite Polymers and Plastics Chemistry Polymer Condensed Matter Physics complex mixtures chemistry.chemical_compound Montmorillonite Chemical engineering Polymerization Mechanics of Materials Polymer chemistry Materials Chemistry Thermal stability Polystyrene Pyridinium |
| Zdroj: | Polymer Degradation and Stability. 91:848-855 |
| ISSN: | 0141-3910 |
| DOI: | 10.1016/j.polymdegradstab.2005.06.016 |
| Popis: | In this paper pyridine and quinoline-containing salts were employed to modify montmorillonite. TGA analysis shows that the quinolinium modified clay has a higher thermal stability than the pyridinium modified clay. Polystyrene nanocomposites were prepared by in situ bulk polymerisation and direct melt blending using both clays. The X-ray diffraction and transmission electron microscopy results show the formation of intercalated structures. The 50% degradation temperature of the nanocomposites is increased and so is the amount of char from TGA analysis compared to the virgin polymer. Cone calorimetric results indicate that clay reduces the peak heat release rate and average mass loss rate and thus lowers the flammability of the polymer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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