Characterization of commercial graphene-based materials for application in thermoplastic nanocomposites
authors de Lima, LRM; Martins, FP; Lagarinhos, JN; Santos, L; Lima, P; Torcato, R; Marques, PAAP; Rodrigues, DL; Melo, S; Grilo, J; Oliveira, JM
nationality International
author keywords graphene-based materials; graphene oxide; reduced graphene oxide; physicochemical properties; nanocomposites
keywords OXIDE
abstract For the development of graphene-based materials (GBM) polymer nanocomposites, aimed for structural applications, the physicochemical properties of several commercial graphene oxide (GO) and reduced graphene oxide (rGO), were evaluated by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, atomic force microscopy (AFM) and scanning electron microscopy (SEM). Through the FTIR spectra, it was observed molecular vibration frequencies in GO and rGO samples, including different types of oxygen functionalities. Raman spectra indicated a poor exfoliation of GO samples and the characteristic peaks D and G of rGO were identified. AFM analysis indicate a high average thickness of the sheets as compared to graphene monolayer (0.345 nm). SEM images show aggregation tendency of the GO and rGO samples. This work highlights the importance of characterizing commercial GBM samples before using them for applications in polymer nanocomposites. (C) 2018 Elsevier Ltd. All rights reserved.
publisher ELSEVIER
issn 2214-7853
year published 2020
volume 20
beginning page 383
ending page 390
digital object identifier (doi) NO_DOI3
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000512898100019
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