Analysis of energy transfer and ternary non-covalent filler/matrix/UV stabilizer interactions in carbon nanofiber and oxidized carbon nanofiber filled poly(methyl methacrylate) composites
Ternary non-covalent interactions between carbon nanofibers (CNFs), oxidized carbon nanofibers (ox- CNFs), poly(methyl methacrylate) (PMMA) chains, and benzotriazole-containing UV stabilizers were analyzed using Fourier-transform infra red spectroscopy (FTIR), time-resolved fluorescence emission...
| Autores Principales: | Gunes, I. Sedat, Pérez Bolívar, César, Jiménez, Guillermo A., Çelikbıçak, Ömür, Li, Fengyu, Anzenbacher, Jr., Pavel, Wesdemiotis, Chrys, Jana, Sadhan |
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| Formato: | Artículo |
| Idioma: | Inglés |
| Publicado: |
Elsevier
2021
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| Materias: | |
| Acceso en línea: |
http://hdl.handle.net/11056/18873 |
| Sumario: |
Ternary non-covalent interactions between carbon nanofibers (CNFs), oxidized carbon nanofibers (ox-
CNFs), poly(methyl methacrylate) (PMMA) chains, and benzotriazole-containing UV stabilizers were
analyzed using Fourier-transform infra red spectroscopy (FTIR), time-resolved fluorescence emission
spectroscopy, and fluorescence lifetime imaging microscopy. The results indicated that PMMA chains
form hydrogen bonds both with ox-CNF fibers and the UV stabilizer molecules. It was also determined
that UV stabilizers strongly interact with CNF particles via p-p interactions. The extent of p-p and
hydrogen bonding interactions was determined to be lower between ox-CNF particles and UV stabilizers
due to less perfect graphitic structure of the former. The morphology of the composites indicated that the
hydrogen bonds between PMMA chains and ox-CNF particles resulted in highly improved state of filler
dispersion in ox-CNF/PMMA composites. |
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