Density, dynamic viscosity, and derived properties of binary mixtures of methanol or ethanol with water, ethyl acetate, and methyl acetate at T=(293.15, 298.15, and 303.15)K

González, Begoña; Calvar, Noélia; Gómez, Elena; Domínguez, Ángeles

doi:10.1016/j.jct.2007.05.004

Cited by 330 publications

(170 citation statements)

References 15 publications

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“…In our MD simulations, the compressed nanochannel can quickly recover to its original shape (o0.2 ns). Similar mechanisms have been demonstrated in carbon nanotubes [33][34][35][36] , where the graphene sheet has a bending stiffness (0.91 eV) similar to that of the GO value calculated here (0.85 eV) 37,38 . The intercalated guest molecules in the nanochannels, such as water, provide additional elasticity for this reversibility.…”

Section: Resultssupporting

confidence: 87%

Ultrafast viscous water flow through nanostrand-channelled graphene oxide membranes

et al. 2013

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Pressure-driven ultrafiltration membranes are important in separation applications. Advanced filtration membranes with high permeance and enhanced rejection must be developed to meet rising worldwide demand. Here we report nanostrand-channelled graphene oxide ultrafiltration membranes with a network of nanochannels with a narrow size distribution (3-5 nm) and superior separation performance. This permeance offers a 10-fold enhancement without sacrificing the rejection rate compared with that of graphene oxide membranes, and is more than 100 times higher than that of commercial ultrafiltration membranes with similar rejection. The flow enhancement is attributed to the porous structure and significantly reduced channel length. An abnormal pressure-dependent separation behaviour is also reported, where the elastic deformation of nanochannels offers tunable permeation and rejection. The water flow through these hydrophilic graphene oxide nanochannels is identified as viscous. This nanostrand-channelling approach is also extendable to other laminate membranes, providing potential for accelerating separation and water-purification processes.

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Section: Resultssupporting

confidence: 87%

Ultrafast viscous water flow through nanostrand-channelled graphene oxide membranes

et al. 2013

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“…However, when the EtOH volume concentration in the PEDOT:PSS solution was less than 20%, the value of the surface tension became larger, and therefore spreading was suppressed and the width was reduced. This phenomenon of variation was induced by the dynamic viscosity of the binary system [15]. Generally, PEDOT:PSS contains water.…”

Section: Resultsmentioning

confidence: 99%

Nozzle Printed-PEDOT:PSS for Organic Light Emitting Diodes with Various Dilution Rates of Ethanol

et al. 2018

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Abstract:In this study, we investigated the ink formulation of poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as the hole injection layer (HIL) in an organic light emitting diode (OLED) structure. Generally, in a PEDOT:PSS solution, water is incorporated in the solution for the solution process. However, the fabrication of thin film which contained the water, main solvent, could not easily form by using printing technology except spin-coating process because of the high surface tension of water. On the other hand, mixing PEDOT:PSS solution and ethanol (EtOH), a dilution solvent, could restrain the non-uniform layer that forms by the high surface tension and low volatility of water. Therefore, we printed a PEDOT:PSS solution with various concentrations of EtOH by using a nozzle printer and obtained a uniform pattern. The line width of PEDOT:PSS diluted with 90% (volume ratio) ehtanol was measured as about 4 mm with good uniformity with a 0.1 mm nozzle. Also, imaging software and a scanning electron microscope (SEM) were used to measure the uniformity of PEDOT:PSS coated on a substrate. Finally, we fabricated a green phosphorescent OLED device with printed-PEDOT:PSS with specific concentrations of EtOH and we achieved a current efficiency of 27 cd/A with uniform quality of luminance in the case of device containing 90% EtOH.

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“…For specified dissolution kinetics, the model elucidates the influence of the step density on the step velocity and enables the calculation of the gross dissolution rate (Gsurf) for a range of step density comparable to that seen in previous AFM measurements. 43,[54][55][56] We considered values of kstep intr = 1 ×10 -6 -5 ×10 -4 m s -1 as the step surface boundary condition, which covered a wide range of interest. 58 As discussed above, the hydrodynamics of an AFM fluid cell can be approximated to an OCC for which a value of Hb = 200 µm is typical.…”

Section: Uniform Step (Us) Modelmentioning

confidence: 99%

“…where ρ is the density of the solution (1.00 g cm -3 was used, as for pure water), η is the dynamic viscosity, assumed to be 1.00 mPa s 55 and p is the pressure.…”

mentioning

confidence: 99%

Importance of Mass Transport and Spatially Heterogeneous Flux Processes for in Situ Atomic Force Microscopy Measurements of Crystal Growth and Dissolution Kinetics

et al. 2016

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It is well-established that important information about the dissolution and growth of crystals can be obtained by the investigation of step movement on single crystal faces via in-situ AFM.However, a potential drawback of this approach for kinetic measurements is that the small region of investigation may not be representative of the overall surface. It is shown that the investigation of local processes without accounting for the processes outside the region of interest can lead to significant misinterpretation of the data collected. Taking the case of gypsum dissolution as an exemplar, we critically analyze literature data and develop 3 different finite element method models that treat in detail the coupled mass transport -surface kinetic problem pertaining to dissolution processes in typical AFM environment. It is shown that mass transport cannot be neglected when performing in-situ AFM on macroscopic surfaces even with highconvection fluid cells. Moreover, crystal dissolution kinetics determined by AFM are mainly influenced by processes occurring in areas of the surface outside the region of interest. When this is recognized, and appropriate models are applied, step velocities due to dissolution are consistent with expectations based on macroscopic measurements and the kinetic gap that is often apparent between nanoscale and macroscopic measurements is closed. This study provides a framework for the detailed analysis of AFM kinetic data that has wide utility and applicability.3

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Density, dynamic viscosity, and derived properties of binary mixtures of methanol or ethanol with water, ethyl acetate, and methyl acetate at T=(293.15, 298.15, and 303.15)K

Cited by 330 publications

References 15 publications

Ultrafast viscous water flow through nanostrand-channelled graphene oxide membranes

Ultrafast viscous water flow through nanostrand-channelled graphene oxide membranes

Nozzle Printed-PEDOT:PSS for Organic Light Emitting Diodes with Various Dilution Rates of Ethanol

Importance of Mass Transport and Spatially Heterogeneous Flux Processes for in Situ Atomic Force Microscopy Measurements of Crystal Growth and Dissolution Kinetics

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