C60–Polymer Nanocomposite Networks Enabled by Guest–Host Properties
| Autor: | Kevin D. Ausman, Mathis Hodge, Jeffery L. White, Gaumani Gyanwali, Rangika S. Hikkaduwa Koralege |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Materials science Fullerene Polymers and Plastics Polymer nanocomposite Cyclodextrin Organic Chemistry Intercalation (chemistry) Polymer Inorganic Chemistry symbols.namesake Membrane chemistry Chemical engineering Polymer chemistry Materials Chemistry symbols Molecule van der Waals force |
| Zdroj: | Macromolecules. 46:6118-6123 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | A modular approach for the synthesis of polymer networks with well-defined node and cross-linking dimensions is described. Each node or tie point in the network is a cyclodextrin molecule, which imparts discrete molecular guest–host capabilities to the network. C60 fullerenes homogeneously intercalate in the network, presumably via van der Waals guest–host interactions with the hydrophobic γ-cyclodextrin cavity, resulting in stable C60-filled polymer networks with improved mechanical properties. Networks prepared with α-cyclodextrin, whose inner cavity is smaller than γ-cyclodextrin, and smaller than the C60 diameter, do not yield materials with stable C60 intercalation. Characterization of the final composites reveals that the cross-linked γ-cyclodextrin-based composites maintain stable C60 concentrations, even after multiple extractions with toluene, which itself is a good solvent for C60. Membranes prepared from the cyclodextrin polymer network, prior to C60 intercalation, should also be useful for C60... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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