Please use this identifier to cite or link to this item: http://cimav.repositorioinstitucional.mx/jspui/handle/1004/2236
EELS analysis of Nylon 6 nanofibers reinforced with nitroxide-functionalized graphene oxide
CESAR CUTBERTO LEYVA PORRAS
CARLOS ELIAS ORNELAS GUTIERREZ
MARIO MIKI YOSHIDA
YAZMIN IRASEMA AVILA VEGA
JOSE BONILLA CRUZ
Acceso Abierto
Sin Derechos Reservados
EELS
A detailed analysis by transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) of nitroxide-functionalized graphene oxide layers (GOFT) dispersed in Nylon 6 nanofibers is reported herein. The functionalization and exfoliation process of graphite oxide to GOFT was confirmed by TEM using electron diffraction patterns (EDP), wherein 1–4 graphene layers of GOFT were observed. The distribution and alignment of GOFT layers within a sample of Nylon 6 nanofiber reveals that GOFT platelets are mainly within the fiber, but some were partially protruding from it. Furthermore, Nylon 6 nanofibers exhibited an average diameter of 225 nm with several microns in length. GOFT platelets embedded into the fiber, the pristine fiber, and amorphous carbon were analyzed by EELS where each spectra [corresponding to the carbon edge (C-K)] exhibited changes in the fine structure, allowing a clear distinction between: (i) GOFT single-layers, (ii) Nylon-6 nanofibers, and (iii) the carbon substrate. EELS analysis is presented here for the first time as a powerful tool to identify functionalized graphene single-layers (< 4 layers of GOFT) into a Nylon 6 nanofiber composite.
2014
Artículo
Inglés
OTRAS
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