Viscosity and density of poly(ethylene glycol) and its solution with carbon dioxide at 353.2 K and 373.2 K at pressures up to 15 MPa

Iguchi, Masayuki; Hiraga, Yuya; Kasuya, Kazuhiro; Aida, Taku Michael; Watanabe, Masaru; Satō, Yoshiyuki; Smith, Richard L.

doi:10.1016/j.supflu.2014.10.013

Cited by 13 publications

(8 citation statements)

References 66 publications

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“…Compared with the PEG-dye inks, the PEG-S465-dye inks have similar rheological properties and viscosity change rules (Figure (b)), which indicates that 0.3% S465 has no role in changing the ink viscosity. Viscosity is determined by intermolecular forces, such as van der Waals forces and hydrogen bond and electrostatic interactions. ,, Besides the PEG–dye and dye–dye hydrophobic interactions in the reactive dye ink (Figure (a)), the water molecules formed hydrogen bonds with the PEG molecules, and intermolecular hydrogen bonds among PEG molecules were formed at higher PEG concentrations. , These two types of hydrogen bonds are shown in Figure (b) and are responsible for increasing the viscosity of the reactive dye ink.…”

Section: Results and Discussionmentioning

confidence: 99%

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Effects of Viscosity and Surface Tension of a Reactive Dye Ink on Droplet Formation

et al. 2020

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In textile inkjet printing, understanding the effect of viscosity and surface tension of a reactive dye ink on droplet formation is of great significance. As an organic ecofriendly solvent, polyethylene glycol with a molecular weight of −400 g/mol (PEG400) was used to prepare reactive dye inks with or without Surfynol 465 (S465) to explain separately how viscosity and surface tension affect the droplet formation of a reactive dye ink. The intermolecular interactions in the ink and physical properties of the ink were investigated by measuring the visible absorption spectra, hydrodynamic radius, viscosity, and surface tension. Droplet formation under a single variable influence of viscosity or surface tension was observed by taking photographs using a high-speed camera. Results show that a high ink viscosity condition generates no satellite droplet formation and a slower droplet velocity, and a higher surface tension tends to cause ligament rupture from the nozzle tip and the droplet. Moreover, a twill cotton fabric printed using the PEG-S465-dye ink at a 30% PEG400 concentration showed higher ink penetration, dye fixation rate, ideal color strength, and rubbing fastness.

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Section: Results and Discussionmentioning

confidence: 99%

“…As a nontoxic, environmentally friendly, water-soluble solvent, − polyethylene glycol was selected as the main additive to prepare a reactive dye ink. The ink formula is simple and more environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Effects of Viscosity and Surface Tension of a Reactive Dye Ink on Droplet Formation

et al. 2020

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“…Therefore, understanding the dye–additive interaction in inks to increase dye concentrations, suppress odors, and improve ink stability is important in the formulation of high-performance reactive dye inks. In the present study, non-toxic and odorless PEGs which are miscible with water were used to explore their effect on dye aggregation in aqueous solutions [23,24]. We tested the physical properties, droplet formation, and the printability of mixed solutions of PEG and reactive dye in order to obtain high-performance reactive dye inks which are environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Jetting Performance of Polyethylene Glycol and Reactive Dye Solutions

et al. 2019

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The jetting performance of dye inks determines the image quality, production efficiency, and lifetime of the print head. In the present study, we explored the jetting performance of mixed solutions of polyethylene glycol (PEG) and reactive dye by testing the visible absorption spectra, rheological properties, and surface tension, in addition to the observation of droplet formation. The results indicate that PEG macromolecules could change the aggregate groups of Red 218 molecules into smaller ones through hydrophobic interactions and separation effect. The addition of PEG into the dye solution increased the viscosity and decreased the surface tension. In the whole shear rate range tested, the 10% and 20% PEG400, as well as the 30% PEG200 dye solutions, showed good Newtonian fluid behavior. PEG macromolecules improved the droplet formation of the dye solutions. Increasing the PEG400 concentration to 30% and 40% resulted in elimination of the formation of satellites and the formation of ideal droplets at 10,000 Hz jetting frequency. A 30% PEG600-dye solution with the Z value of 4.6 formed the best spherical droplets at 10,000 Hz and produced perfect color images on cotton fabrics.

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“…The formula for calculating the viscosity of percolation fluid is also given [25], but it is difficult to be applied directly because the thickness of the boundary layer and the average viscosity involved in this formula are difficult to be measured. Currently, there are many kinds of conventional viscosity testing methods, which are generally divided into three categories: capillary method [35,36], rotation method [37][38][39], and vibration method [40][41][42][43]. These methods can only measure the viscosity by direct contact with the fluid, and it is impossible to test the viscosity of the fluid in the porous media: that is, the in situ viscosity of fluid in porous media cannot be measured, whereas the in situ viscosity of the fluid in porous media is more capable of characterizing the transport capacity of the fluid, so it is especially necessary to develop the method of testing the in situ viscosity of fluid in porous media.…”

Section: Introductionmentioning

confidence: 99%

A Measured Method for In Situ Viscosity of Fluid in Porous Media by Nuclear Magnetic Resonance

Yang

Luo

et al. 2018

Geofluids

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At present, the existing measuring methods for viscosity of fluid can only obtain the viscosity of bulk fluid, while the in situ viscosity of fluid in porous media cannot be acquired. In this paper, with the combination of nuclear magnetic resonance (NMR) and physical simulation experiment, a testing method for in situ viscosity of fluid in porous media is established, and the in situ viscosity spectra of water in tight cores under different displacement conditions is obtained. The experimental results show that the in situ viscosity distribution of water in porous media is inhomogeneous, and it is not a constant but is related to the distance between water and rock walls. When the distance between fluid and rock walls is close enough (e.g., 2 relaxation time is less than 1 ms), the viscosity of fluid increases rapidly, and the in situ viscosity is greater than the bulk viscosity. Moreover, after the rock samples are saturated with water, the in situ viscosity of water is distributed as a double-peak structure. The left peak is characterized mainly by the in situ viscosity distribution of movable fluid, whose in situ viscosity is smaller, and the right peak mainly represents the in situ viscosity distribution characteristics of immovable fluid, whose in situ viscosity is larger and increases gradually. Under a relatively large driving force, the in situ viscosity amplitude of movable fluid decreases greatly, and the average in situ viscosity of residual water in the core is much higher than that of saturated water in initial state.

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Viscosity and density of poly(ethylene glycol) and its solution with carbon dioxide at 353.2 K and 373.2 K at pressures up to 15 MPa

Cited by 13 publications

References 66 publications

Effects of Viscosity and Surface Tension of a Reactive Dye Ink on Droplet Formation

Effects of Viscosity and Surface Tension of a Reactive Dye Ink on Droplet Formation

Jetting Performance of Polyethylene Glycol and Reactive Dye Solutions

A Measured Method for In Situ Viscosity of Fluid in Porous Media by Nuclear Magnetic Resonance

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