Crystallization and Morphological Features of Syndiotactic/Atactic Polystyrene Blends at High Temperatures
| Autor: | Chung Hau Hung, Young Da Fan, Chi Wang, Chung Chiu Chen |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Polymers and Plastics Small-angle X-ray scattering Organic Chemistry Condensed Matter Physics Isothermal process law.invention Amorphous solid chemistry.chemical_compound chemistry law Tacticity Polymer chemistry Materials Chemistry Lamellar structure Polystyrene Polymer blend Physical and Theoretical Chemistry Crystallization |
| Zdroj: | Macromolecular Chemistry and Physics. 208:2428-2438 |
| ISSN: | 1521-3935 1022-1352 |
| Popis: | Crystalline/amorphous binary mixtures of polystyrene with different tacticities, syndiotactic/ atactic isomers (sPS/aPS), have been systematically studied to reveal the composition dependence of the blend morphologies, i.e., sPS lamellar structure and aPS diluent segregation, developed after isothermal crystallization. To reveal the molecular weight effect of the aPS diluents, four different Mw of aPS were used to prepare blends with various compositions. After being melt crystallized isothermally at 250 °C, all blends were investigated by means of POM, WAXS, and SAXS as well as SEM and TEM to reveal the spherulitic and lamellar morphologies developed. |
| Databáze: | OpenAIRE |
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