Structural characterization of heterocyclic polymer networks by low-frequency Raman scattering
| Autor: | V. P. Azarenkov, V. N. Novikov, A. P. Shebanin, A. V. Baibak, V. P. Privalko, Yu. V. Kramarenko |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
chemistry.chemical_classification
Persistence length Materials science Epoxy Polymer Oligomer Molecular physics Light scattering symbols.namesake chemistry.chemical_compound chemistry visual_art Polymer chemistry visual_art.visual_art_medium symbols General Materials Science Hexamethylene diisocyanate Raman spectroscopy Spectroscopy Raman scattering |
| Zdroj: | Journal of Raman Spectroscopy. 25:139-143 |
| ISSN: | 0377-0486 |
| DOI: | 10.1002/jrs.1250250202 |
| Popis: | Glassy, heterocyclic copolymers of an epoxy oligomer and hexamethylene diisocyanate were characterized by low-frequency Raman scattering spectra at room temperature. The experimental data were treated according to the formalism of the theory of inelastic light scattering from fractons to derive structural information in the scale range below 10 nm. The samples studied were shown to behave essentially fractal-like in the range of characteristic scales (on an order-of-magnitude basis) spanning roughly the chain persistence length (ca. 0.7 nm) as a lower structural limit and the network mesh size (ca. 3 nm) as an upper structural limit. |
| Databáze: | OpenAIRE |
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