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14 2.4.3 Material properties of the graphite solution Viscosity is the transport property of the fluids that serves as quantitative data to design mass transfer, heat transfer and fluid flow mechanism [25]. By measuring the time for a volume of liquid to flow under gravity, the dynamic viscosity can be obtained by multiplying the kinematic viscosity by the density of the fluid [26]. Density of the fluid (πτ°) was found as a product of the measured specific gravity of the graphite solution (ππΊτ°) and density of water (πτ°τ°τ°τ° τ°). πτ° = ππΊτ° β πτ°τ°τ°τ° τ°(1) The measured dynamic viscosity of the graphite protein solution was 1.1429 cP as opposed to the dynamic viscosity of water which is 1 cP. The specific gravity of the solution is 1.0105 which results in the solution's kinematic viscosity to be 1.131 cSt. The density of the solution is 1010.5 kg/m3 . 2.4.4 Graphene exfoliation using the kitchen blender Raman spectroscopy was used to investigate the exfoliation of graphene. Using the ratio of peak intensities ID/IG, one can use Raman spectra to characterize the level of disorder in graphene. The number of layers can be derived from the ratio of peak intensities, I2D /IG , as well as the position and shape of these peaks [27]. Using the spectroscopy, it was found that the ID/IG was 0.5 and the I2D/IG was0.375(Figure3).Thespectroscopyseemedtoreplicatethedataofexperiments performed by Guo et al [28], although the ID/IG seemed to be higher in this instance. It could be πτ° = τ°τ°τ° (2) τ°τ°τ°PDF Image | Hydrodynamic cavitation exfoliation layered graphene nano
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