Temperature Induced Structural Changes in Syndiotactic Polystyrene/cis-Decalin Systems
| Autor: | J. De Rudder, Sanjay Rastogi, H. Berghmans, T. Roels |
|---|---|
| Přispěvatelé: | Chemical Engineering and Chemistry |
| Rok vydání: | 1997 |
| Předmět: |
Quenching
Polymers and Plastics Chemistry Organic Chemistry Infrared spectroscopy ComputingMilieux_LEGALASPECTSOFCOMPUTING Inorganic Chemistry Crystallography chemistry.chemical_compound Differential scanning calorimetry Zigzag Decalin Phase (matter) Polymer chemistry Materials Chemistry Polystyrene Solid solution |
| Zdroj: | Macromolecules, 30(25), 7939-7944. American Chemical Society |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | Phase transformations in solutions of syndiotactic polystyrene in cis-decalin has been investigated by differential scanning calorimetry, wide and small angle X-ray scattering, and Fourier transformed infrared spectroscopy. The in-situ performed experiments enabled identification of the different modifications without solvent removal. Quenching a solution leads to formation of the helical ‰-phase. On heating, this phase transforms into the planar zigzag ‚-phase. The transformation of the helical phase (‰) into the planar zigzag (‚) during heating proceeds via a melting-recrystallization process. |
| Databáze: | OpenAIRE |
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