Carbon nanotubes-based nanohybrids for multifunctional nanocomposites

Journal of King Saud University: Science

Sabrina Carroccio¹  Cristian Gambarotti²  Rossella Arrigo³  Nadka Tzankova Dintcheva³  Sonia Bellavia³ 

[1] Consiglio Nazionale delle Ricerche – IMM s.s Catania (Università), Via S. Sofia 64, 95123 Catania, Italy;Dipartimento di Chimica, Materiali ed Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy;Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, Ed. 6, 90128 Palermo, Italy;

关键词: UHMWPE;    CNTs;    Scavenging activity;    Nanocomposites;    Rheological behaviour;    Thermo-oxidation;   

DOI  :  10.1016/j.jksus.2017.09.007

来源: DOAJ

【 摘 要 】

In the present work, nano-hybrids based on carbon nanotubes (CNTs) bearing immobilized, either through covalent linkage and physical absorption, commercial anti-oxidant molecules have been formulated and used as nanofillers in Ultra High Molecular Weight Polyethylene (UHMWPE), aiming at preparing multifunctional nanocomposites. The effective immobilization of the anti-oxidant molecules has been probed by spectroscopic and thermogravimetric analyses. The study of the morphology and the rheological behaviour of the nanocomposites show that the immobilization of anti-oxidant molecules onto the CNTs surface is beneficial for the state of the polymer/nanoparticles interfacial region. Additionally, the study of the nanocomposites thermo-oxidative behaviour reveals that the nano-hybrids are able to exert a remarkable anti-oxidant action which is related to the strong interactions established between the anti-oxidant molecules and the CNTs, resulting in the formation of structural defects onto the CNTs surface and in the consequent amplification of the intrinsic CNTs radical scavenging activity.

【 授权许可】

Unknown