scholarly journals Jetting Performance of Polyethylene Glycol and Reactive Dye Solutions

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 739 ◽  
Author(s):  
Zhiyuan Tang ◽  
Kuanjun Fang ◽  
Yawei Song ◽  
Fuyun Sun
Keyword(s):  
Surface Tension ◽  
Polyethylene Glycol ◽  
Production Efficiency ◽  
Hydrophobic Interactions ◽  
Reactive Dye ◽  
Droplet Formation ◽  
Visible Absorption ◽  
Fluid Behavior ◽  
Spherical Droplets ◽  
Dye Solutions

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.

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

Langmuir ◽  
2020 ◽  
Vol 36 (32) ◽  
pp. 9481-9488 ◽  
Author(s):  
Zhiyuan Tang ◽  
Kuanjun Fang ◽  
Mohd Nadeem Bukhari ◽  
Yawei Song ◽  
Kun Zhang
Keyword(s):  
Surface Tension ◽  
Reactive Dye ◽  
Droplet Formation

Synthesis and Application of Itaconic Acid Water-Coke Slurry Dispersant

2017 ◽  
Vol 896 ◽  
pp. 167-174 ◽  
Author(s):  
Zhi Yuan Yang ◽  
Zhuo Yue Meng ◽  
Zhi Hua Li ◽  
Si Tong Wang
Keyword(s):  
Surface Tension ◽  
Polyethylene Glycol ◽  
Itaconic Acid ◽  
High Performance ◽  
Ph Value ◽  
Raw Materials ◽  
Esterification Reaction ◽  
Solution Ph ◽  
Powder Surface ◽  
Coke Powder

Polyethylene glycol (PEG-200) and itaconic acid (IA) were used as raw materials to compound macromer through esterification reaction. A new type of specialized water-coke slurry dispersant was synthesized by copolymerization of microware, sodium methallyl sulfonate (SMAS) and maleic anhydride (MA). The experiment showed that the concentration of slurry could be reached to 63% with the dosage of 0.2%, and the apparent viscosity was 1140.3 mPa∙s. Through the analysis of the infrared, the dispersant was confirmed to have polyethylene glycol branched chain and hydrophilic functional groups such as carboxyl or sulfonic group. When the concentration of dispersant was 30 g/L, the surface tension of water could be decreased from 72.70 mN/m to 45.50 mN/m. Furthermore, when the solution pH value was 9, the Zeta potential of semi-coke powder surface could also be decreased from-13.38 mV to-25 mV with the addition of dispersant. Thus, this dispersant could increase electronegativity of semi-coke powder surface, enhance steric-hindrance effect and prevent the phenomenon of powder flocculation and gather. Meantime, it also could reinforce the semi-coke hydrophilic by reducing the surface tension of water effectively. And then, the high performance water-coke slurry could be obtained.

scholarly journals Buffer Additives and Packaging Differentially Influence the Stability of Dyes Commonly Used in Chromovitrectomy

2016 ◽  
Vol 1 (3) ◽  
pp. 1-10
Author(s):  
Begoña Parrado Aliod ◽  
Wilfried Kugler ◽  
Tim Häring
Keyword(s):  
Polyethylene Glycol ◽  
Chemical Stability ◽  
Deuterium Oxide ◽  
Oxidative Degradation ◽  
Bromophenol Blue ◽  
Physiological Range ◽  
Vis Spectroscopy ◽  
The Stability ◽  
Acid Violet ◽  
Dye Solutions

Purpose: This study was performed to investigate the chemical stability of different dyes used in chromovitrectomy and the influence of various product parameters on it. Methods: Buffered dye solutions were prepared containing 1.5 g/L acid violet 17, 0.25 g/L brilliant blue G, 1.3 g/L bromophenol blue, and 1.5 g/L trypan blue, combined with deuterium oxide, polyethylene glycol 3350, and D-mannitol as additives. For accelerated storage testing, samples were incubated for 400 h at 80°C corresponding to 2 years according to the Van ‘t Hoff equation. After different incubation times samples were taken for UV/Vis spectroscopy, pH measurement, and osmometry. Results: Depending on dye, additive, and packaging, different solutions exhibit differences in chemical stability and hence shelf life. Packaging in syringes instead of vials increases dye stability. Additives may negatively influence important parameters, e.g. polyethylene glycol 3350 increases osmolality beyond the physiological range. Notably, acid violet 17 is chemically unstable except in D-mannitol-containing buffer, packed in syringes. However, simultaneously, D-mannitol leads to a pH shift below 7.0. Conclusion: In summary, dye solutions filled in syringes should be preferred to vials to slow down oxidative degradation. Especially acid violet 17 solutions should be used with caution because the addition of D-mannitol may contribute to pH values beyond the physiological range.

Treatment of reactive dye solutions by physicochemical combined process

2009 ◽  
Vol 12 (1-3) ◽  
pp. 202-209 ◽  
Author(s):  
A.Z. Bouyakoub ◽  
S. Kacha ◽  
B. Lartiges ◽  
S. Bellebia ◽  
Z. Derriche
Keyword(s):  
Reactive Dye ◽  
Combined Process ◽  
Dye Solutions

Study on Preparation and Property of Regenerated Liquid Reactive Dyes Regenerated Magenta

2014 ◽  
Vol 941-944 ◽  
pp. 445-449
Author(s):  
Hong Lin Yang ◽  
Wei Xiang ◽  
Guang Jie Chen
Keyword(s):  
Surface Tension ◽  
Inkjet Printing ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Deionized Water ◽  
Particle Sizes

The regenerated liquid reactive dye Regenerated Magenta had been prepared with the waste reactive ink of Jettex R Magenta in the process of digital inkjet printing. The effects of quality percentage of waste ink, cosolvent, pH regulator on the stabilities of Regenerated Magenta had been investigated. The results show that the Regenerated Magenta ink prepared with waste ink 26%, N-methyl-2-pyrrolidone 4%, THAM 1%, ethanediol 3% and deionized water 67% has good performances such as particle sizes, surface tension, viscosity and conductivity. The characteristics of Regenerated Magenta ink meet the demands of the ink for digital inkjet printing.

scholarly journals Systematically Exploring Molecular Aggregation and Its Impact on Surface Tension and Viscosity in High Concentration Solutions

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1588 ◽  
Author(s):  
Huan Wang ◽  
Han Kong ◽  
Jie Zheng ◽  
Hui Peng ◽  
Chuangui Cao ◽  
...  
Keyword(s):  
Surface Tension ◽  
Great Influence ◽  
Reactive Dyes ◽  
Side Chain ◽  
Molecular Aggregation ◽  
Dye Molecules ◽  
High Concentration ◽  
Hydrophilic Group ◽  
Aggregation Structure ◽  
Dye Solutions

The aggregation structure of dye molecules has a great influence on the properties of dye solutions, especially in high concentration. Here, the dye molecular aggregation structures were investigated systemically in aqueous solutions with high concentration using three reactive dyes (O-13, R-24:1 and R-218). O-13 showed stronger aggregation than R-24:1 and R-218. This is because of the small non-conjugate side chain and its β-linked position on the naphthalene of O-13. Compared with R-218, R-24:1 showed relatively weaker aggregation due to the good solution of R-24:1. The change of different aggregate distributions in the solutions were also investigated by splitting the absorption curves. Moreover, it is found that the surface tension of solutions can be modified by the combined effect of both aggregation and the position of the hydrophilic group, which, however, also have an effect on viscosity. This exploration will provide guidance for the study of high concentration solutions.

Sign in / Sign up

Export Citation Format

Share Document