Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
RHEOLOGICAL BEHAVIOR OF GRAPHENE OXIDE SUSPENSIONS IN POLY(ETHYELENE GLYCOL)
Submission Author:
yago soares , RJ
Co-Authors:
yago soares, Monica Naccache, Ricardo Jorge Espanhol Andrade, Elyff Cargnin
Presenter: yago soares
doi://10.26678/ABCM.COBEM2019.COB2019-1259
Abstract
The main objective of this work is to characterize the rheological behavior of the suspensions of graphene oxide (GO) dispersed in poly(ethylene) glycol (PEG), through the rotational rheometer MCR501 and MCR301. Graphene oxide was obtained through Hummers’ method and characterized by various techniques. This method is based on the chemical exfoliation of graphite through strong acids such as sulfuric acid, thus generating the graphite oxide (GrO), which is exfoliated in an ultrasonic bath in PEG for the formation of the suspension with graphene oxide. The rheological characterization is fulfilled through measurements in steady shear flow, transient shear flow and oscillatory shear flow. The characterization of GO was performed using techniques such as: X-Ray Diffraction (XRD), Raman Spectroscopy, Fourier Transform Infrared (FTIR), Atomic Force Microscopy (AFM) and Thermogravimetric Analysis (TGA). The results will serve as a basis for understanding the interaction between the GO and the polymer, and the rheological behavior of GO-based polymer nanofluids.
Keywords
Polyethylene glycol, rheological behavior, graphene oxide, characterization
