Cross-linking of multiwalled carbon nanotubes with polymeric amines
| Autor: | Antonius Broekhuis, Tatiana Fernandez Landaluce, Marc C. A. Stuart, Petra Rudolf, Youchun Zhang, Francesco Picchioni, Daniele Fausti |
|---|---|
| Přispěvatelé: | Engineering and Technology Institute Groningen, Product Technology, Surfaces and Thin Films, Optical Physics of Condensed Matter |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Thermogravimetric analysis
Materials science Nanocomposite Polymers and Plastics Scanning electron microscope Organic Chemistry CHEMICAL FUNCTIONALIZATION Carbon nanotube COPOLYMER BUNDLES NANOCOMPOSITES law.invention Inorganic Chemistry symbols.namesake DEFUNCTIONALIZATION X-ray photoelectron spectroscopy RAMAN-SPECTROSCOPY SINGLE-WALL Transmission electron microscopy law Polymer chemistry Materials Chemistry symbols Surface modification Raman spectroscopy |
| Zdroj: | Macromolecules, 41(16), 6141-6146. AMER CHEMICAL SOC |
| ISSN: | 0024-9297 |
| Popis: | Functionalization of carbon nanotubes is considered as an essential step to enable their manipulation and application in potential end-use products. In this paper we introduce a new approach to functionalize multiwalled carbon nanotubes (MWNTs) by applying an amidation-type grafting reaction with amino-functionalized alternating polyketones. The functionalized MWNTs were characterized by using thermogravimetric analysis (TGA), X-ray photoemission spectroscopy (XPS), element analysis, Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Around 40 wt % polyamines based on the total weight of the MWNTs can be covalently attached to the surface of the MWNTs. It is found that polyamines act as cross-linking agents to interconnect or cross-link the MWNTs within and between bundles, as demonstrated by SEM and TEM. analysis. After cross-linking, the functionalized MWNTs are insoluble in any solvent. The cross-linked MWNTs can be melt-blended into polyethylene, and the resulting composites show comparable mechanical properties to those obtained by simple blending of "un-cross-linked" nanotubes with polyethylene. |
| Databáze: | OpenAIRE |
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