Multi-functional Stabilizers-functionalized Carbon Nanotubes for advanced Ultra-High Molecular Weight Polyethylene-based Nanocomposites
| Autor: | N. Tz. Dintcheva, R. Arrigo, E. Morici, C. Gambarotti, G. Filippone, S. Coiai, S. C. Carroccio |
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| Přispěvatelé: | Dintcheva NT, Arrigo R, Morici E, Gambarotti, C, Filippone G, Coiai, S, Carroccio SC |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | X INSTM CONFERENCE, Favignana, 28th June-1st July 2015 info:cnr-pdr/source/autori:N. Tz. Dintcheva, R. Arrigo, E. Morici, C. Gambarotti, G. Filippone, S. Coiai, S. C. Carroccio/congresso_nome:X INSTM CONFERENCE/congresso_luogo:Favignana/congresso_data:28th June-1st July 2015/anno:2015/pagina_da:/pagina_a:/intervallo_pagine |
| Popis: | Stabilizing molecules, such as hindered phenols (both synthetic and naturally occurring), polyphenols and hindered amine light stabilizers, were covalently linked or physically absorbed onto outer surface of multi-walled carbon nanotubes (CNTs) and the obtained multi-functional fillers (Stab-f-CNTs) were dispersed in Ultra High Molecular Weight Polyethylene (UHMWPE) aiming at obtaining advanced nanocomposites with enhanced thermo- and/or photo-oxidative stability, electrical and mechanical properties. The chemical grafting or physical absorption of stabilizing molecules is confirmed by spectroscopic, spectrometric and thermo-gravimetric analyses, and the influence of the multi-functional nanoparticles on the morphology, mechanical, electrical and rheological behaviour and thermo-/photo-oxidative stability of the nanocomposites are investigated. UHMWPE/Stab-f-CNTs nanocomposites show improved electrical and mechanical properties compared with those of bare CNTs based nanocomposites and, due to the multi-functional nature of used nanoparticles, shows enhanced thermo-/photo-oxidative stability caused by a synergic action between the immobilized stabilizing molecules and the radical scavenging activity of CNTs. |
| Databáze: | OpenAIRE |
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