6533b829fe1ef96bd1289977
RESEARCH PRODUCT
Immobilization of natural anti-oxidants on carbon nanotubes and aging behavior of ultra-high molecular weight polyethylene-based nanocomposites
Cristian GambarottiSabrina CarroccioRossella ArrigoFrancesca CicognaNadka Tzankova DintchevaGiovanni FilipponeM. Guenzisubject
Ultra-high-molecular-weight polyethyleneMaterials scienceNanocompositeCarbon NanotubeUHMWPENatural antioxidants Carbon nanotubes α-Tocopherol Quercetin UHMWPE StabilizationNanotechnologyCarbon nanotubeNanocompositeslaw.inventionchemistry.chemical_compoundchemistrylawMoleculedescription
The use of natural antioxidants is an attractive way to formulate nanocomposites with extended durability and with potential applications in bio-medical field. In this work, Vitamin E (VE) in the form of α-tocopherol and Quercetin (Q) are physically immobilized on the outer surface of multi-walled carbon nanotubes (CNTs). Afterward, the CNTs-VE and CNTs-Q are used to formulate thermally stable ultra high molecular weight polyethylene based nanocomposites. The obtained results in the study of the thermo-oxidation behavior suggest a beneficial effect of the natural anti-oxidant carbon nanotubes systems. The unexpected excellent thermo-resistance of the nanocomposites seems to be due to a synergistic effect of the natural anti-oxidant and carbon nanotubes, i.e. strong interaction between CNT surface and anti-oxidant molecules. Particularly, these interactions cause the formation of structural defects onto outer CNT surfaces, which, in turn, increase the CNT radical scavenging activity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 | AIP Conference Proceedings |