Multiple order light scattering by ringed spherulites
| Autor: | J.-J. Point |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Geometrical optics Condensed matter physics Scattering business.industry Organic Chemistry Polymer Light scattering Light intensity Optics chemistry Adipate Materials Chemistry Scattering theory business Intensity (heat transfer) |
| Zdroj: | Polymer. 47:3186-3196 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2006.03.023 |
| Popis: | The transmittivity [Point JJ. Bull Clas Sci Acad Roy Belg 1953;39:455; 1955;41:982. [1]] of light intensity through spherulitic films of poly(ethylene adipate) (PEA) is not uniform. These films may actually be used as multiple diffraction gratings. The intensity of the first order scattering depends reversibly on the temperature T of the film (between 10 and 59 °C). For sufficient film thickness (e.g. 30 μm), this intensity is an increasing function of T. It is, however, a decreasing function of T when the films are sufficiently thin (e.g. 2 μm). These, and other effects are explained by geometrical optics and by the electromagnetic theory of light. Evidently, these effects are not specific to PEA but are characteristic properties of ringed spherulites of polymers and other materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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