Optical Probes for Monitoring Intercalation and Exfoliation in Melt-Processed Polymer Nanocomposites
| Autor: | Richard H. Harris, Joseph D. Harris, Paul H. Maupin, Marius Murariu, Anthony J. Bur, Jeffrey W. Gilman, Steven C. Roth, Séverine Bellayer, Alexander B. Morgan |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
Polymers and Plastics Polymer nanocomposite Organic Chemistry Intercalation (chemistry) Fluorescence spectrometry engineering.material Exfoliation joint Fluorescence spectroscopy Polymer clay chemistry.chemical_compound Nylon 6 Chemical engineering chemistry Polymer chemistry Materials Chemistry engineering Organoclay |
| Zdroj: | Macromolecular Rapid Communications. 25:788-792 |
| ISSN: | 1521-3927 1022-1336 |
| Popis: | Summary: Laser-induced fluorescence spectroscopy of the optical probe Nile Blue A in polymer clay nanocomposites is described. Concentration quenching of the fluorescence dominates the probe behavior until the clay platelets are physically separated by polymer intercalation. Further separation into an exfoliated structure results in an intense increase in probe fluorescence. Preliminary results indicate the ability to discriminate between intercalated and exfoliated structures in nanocomposites formed by melt processing. Polyamide 6 nanocomposites: Purple, 1 minute processing (left). Red, 7 minute processing (right). |
| Databáze: | OpenAIRE |
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