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1. Recent progress of enantioseparation under scale production (2014–2019)

Author:
Wu, Datong; Pan, Fei; Tan, Wensheng; Gao, Li; Tao, Yongxin; Kong, Yong
Source:
Journal of separation science 2020 v.43 no.1 pp. 337-347
ISSN:
1615-9306
Subject:
high performance liquid chromatography; liquid-liquid extraction,   etc   ; absorption; enantiomers; enantioselectivity;     Show all 5 Subjects
Abstract:
... Very different from enantiorecognition at an analytical level, preparative enantioseparation at scale production has to confront many problems. In recent years, various separation techniques have been developed with much progress including high‐performance liquid chromatography, liquid–liquid extraction, membrane separation, enantioselective solid‐phase absorption, and enantioselective precipitati ...
DOI:
10.1002/jssc.201900682

2. Capillary rivulet rise in real-world corners

Author:
Gerlach, Felix; Hussong, Jeanette; Roisman, Ilia V; Tropea, Cameron
Source:
Colloids and surfaces 2020 v.592 pp. 124530
ISSN:
0927-7757
Subject:
liquids,   etc   ; capillarity; roughness;     Show all 3 Subjects
Abstract:
... The capillary rise of liquid in a perfect corner wedge has been well studied in the past, yielding a t¹/³ rise behavior with no upper bound on the height of the rivulet. However, in real-world situations the wedge corner is often not exactly sharp, either because of roughness or fabrication imperfections. In the following study the behavior of capillary rivulet rise in rounded corners is examined ...
DOI:
10.1016/j.colsurfa.2020.124530

3. Oscillations of free surface at the edge of short capillary tubes

Author:
Xiao, Junfeng; Liu, Xiang; Luo, Youming; Cai, Jianchao; Xu, Jianfeng
Source:
Colloids and surfaces 2020 v.591 pp. 124572
ISSN:
0927-7757
Subject:
liquids,   etc   ; energy; mathematical models;     Show all 3 Subjects
Abstract:
... Liquid gets imbibed into the capillary tube under the influence of capillary pressure. If capillary tube is shorter than Jurin height, oscillations of free surface are observed when contact line is confined by the edge of tube. Through numerical simulations and theoretic analyses, the velocity at the tube edge is determined, and the morphologies of meniscus at different stages of oscillation are i ...
DOI:
10.1016/j.colsurfa.2020.124572

4. Capillary forces on wet particles with a liquid bridge transition from convex to concave

Author:
Xiao, Fei; Jing, Jiaqiang; Kuang, Shibo; Yang, Lu; Yu, Aibing
Source:
Powder technology 2020 v.363 pp. 59-73
ISSN:
0032-5910
Subject:
liquids,   etc   ; models; prediction;     Show all 3 Subjects
Abstract:
... The transition of a liquid bridge profile from convex to concave and the associated capillary forces are experimentally studied via particle-particle and particle-plane pairs. The results demonstrate that a convex liquid bridge appears at a relatively large water volume and small separation distance, where the capillary force remains approximately constant. As the separation distance increases, th ...
DOI:
10.1016/j.powtec.2020.01.020

5. Pinch-off of a viscous liquid bridge stretched with high Reynolds numbers

Author:
Brulin, Sebastian; Tropea, Cameron; Roisman, Ilia V.
Source:
Colloids and surfaces 2020 v.587 pp. 124271
ISSN:
0927-7757
Subject:
liquids,   etc   ; geometry; viscosity;     Show all 3 Subjects
Abstract:
... In this study a stretching of a viscous liquid bridge formed between two flat solid parallel substrates is investigated experimentally. The stretching of the liquid bridge is caused by the constant acceleration of one moving substrate.The geometry of the liquid bridge is observed using a high-speed video system. It is shown that at large times the radius of the liquid jet follows the dependence R∼ ...
DOI:
10.1016/j.colsurfa.2019.124271

6. Studies on temperature characteristics and initial formation interface during cyclopentane-methane hydrate formation in large-scale equipment with bubbling

Author:
Cai, Jing; Lv, Tao; Zhang, Yu; von Solms, Nicolas; Xu, Chun-Gang; Chen, Zhao-Yang; Li, Xiao-Sen
Source:
Applied energy 2020 v.258 pp. 114076
ISSN:
0306-2619
Subject:
liquids,   etc   ; equipment; heat; temperature;     Show all 4 Subjects
Abstract:
... In this work, temperature characteristics during hydrate formation were investigated in the cyclopentane-methane system using large-scale equipment with bubbling. The volume in each experiment was increased by a factor of 80 compared with previous work. A group of scaled-up experiments, under the optimal condition based on experiments in the smaller crystallizer, was carried out to verify the scal ...
DOI:
10.1016/j.apenergy.2019.114076

7. Maximizing two-dimensional liquid chromatography peak capacity for the separation of complex industrial samples

Author:
Zhu, Koudi; Pursch, Matthias; Eeltink, Sebastiaan; Desmet, Gert
Source:
Journal of chromatography 2020 v.1609 pp. 460457
ISSN:
0021-9673
Subject:
liquid chromatography,   etc   ; industry; polymers;     Show all 3 Subjects
Abstract:
... We report on a study on the use of 2D-LC in industry wherein we maximized the peak capacity by serially coupling up to six 15 cm long columns in the 1st dimension. For the considered aromatic amine oligomer sample, the combination of reverse phase pentafluorophenyl column providing selectivity based on π–π interaction in the 1st and a more retaining reverse phase polymeric C18 column in the 2nd di ...
DOI:
10.1016/j.chroma.2019.460457

8. Measurement of contact angle under different gravity generated by a long-arm centrifuge

Author:
Liu, Yong-Ming; Wu, Zi-Qing; Yin, Da-Chuan
Source:
Colloids and surfaces 2020 v.588 pp. 124381
ISSN:
0927-7757
Subject:
liquid-air interface; liquids,   etc   ; adhesion; contact angle; gravity; wettability;     Show all 6 Subjects
Abstract:
... The contact angle, as a vital measured parameter of wettability of a material surface, is pertinent to adhesion, nucleation, capillary phenomena, and liquid management in space. With the development of space exploration, the relationship between the contact angle and gravity has attracted increasing attention. In this study, we designed and manufactured a long-arm centrifuge (d =6 m) and a matched ...
DOI:
10.1016/j.colsurfa.2019.124381

9. Liquid chromatography above 20,000 PSI

Author:
Sorensen, Matthew J.; Anderson, Brady G.; Kennedy, Robert T.
Source:
Trends in analytical chemistry 2020 v.124 pp. 115810
ISSN:
0165-9936
Subject:
high performance liquid chromatography; ultra-performance liquid chromatography,   etc   ; instrumentation;     Show all 3 Subject
Abstract:
... Continued improvements in HPLC have led to faster and more efficient separations than previously possible. One important aspect of these improvements has been the increase in instrument operating pressure and the advent of ultrahigh pressure LC (UHPLC). Commercial instrumentation is now capable of up to ~20 kpsi, allowing fast and efficient separations with 5–15 cm columns packed with sub-2 μm par ...
DOI:
10.1016/j.trac.2020.115810
PubMed:
32382203
PubMed Central:
PMC7204529

10. Observation of Femtosecond Acoustic Anomaly in a Solid Liquid Interface

Author:
Sun, Chi-Kuang; Yao, Yi-Ting; Shen, Chih-Chiang; Ho, Mu-Han; Lu, Tien-Chang; Sheu, Jinn-Kong
Source:
Journal of physical chemistry 2020 v.124 no.5 pp. 2987-2993
ISSN:
1932-7455
Subject:
liquid-solid interface; liquids,   etc   ; acoustics; ice; technology; viscoelasticity;     Show all 6 Subjects
Abstract:
... Here we report a femtosecond anomaly observed at a solid–liquid interface: femtosecond acoustic echo being advanced by the application of a viscous liquid to the solid surface. Through extensive simulation and experiments, we attribute this new discovery to the effect introduced by the surface-adsorbed water layer, switching between properties more viscous than water and more solid-like than ice. ...
DOI:
10.1021/acs.jpcc.9b09359

11. Application of two‐dimensional liquid chromatography in the separation of traditional Chinese medicine

Author:
Zhou, Weijia; Liu, Yanming; Wang, Jixia; Guo, Zhimou; Shen, Aijin; Liu, Yanfang; Liang, Xinmiao
Source:
Journal of separation science 2020 v.43 no.1 pp. 87-104
ISSN:
1615-9306
Subject:
comprehensive two-dimensional liquid chromatography; liquid chromatography,   etc   ; Oriental traditional medicine;     Show all 3 Subject
Abstract:
... Traditional Chinese medicines have been widely used to prevent and cure diseases for thousands of years. For the purpose of better understanding the extremely complicated traditional Chinese medicines, powerful separation techniques are essential. Two‐dimensional liquid chromatography has been proven to be more powerful for the separation of complex traditional Chinese medicines due to its enhance ...
DOI:
10.1002/jssc.201900765

12. Novel sample preparation approaches in gas chromatographic analysis: Promising ideas

Author:
Vyviurska, Olga; Špánik, Ivan
Source:
Journal of separation science 2020 v.43 no.1 pp. 174-188
ISSN:
1615-9306
Subject:
liquid-liquid extraction,   etc   ; gas chromatography; solid phase extraction;     Show all 3 Subjects
Abstract:
... The development of sample preparation procedures is still a dynamic process despite a number of already proposed techniques. The main challenge in this research field is to fully replace classical procedures like liquid‐liquid extraction and solid‐phase extraction in gas chromatographic analysis. Some progress has been already achieved for the last 20 years when miniaturized techniques were incorp ...
DOI:
10.1002/jssc.201900685

13. Active, self-motile, and driven emulsions

Author:
Ignés-Mullol, Jordi; Sagués, Francesc
Source:
Current opinion in colloid & interface science 2020 v.49 pp. 16-26
ISSN:
1359-0294
Subject:
liquid crystals,   etc   ; droplets; emulsions; energy;     Show all 4 Subjects
Abstract:
... In this review, we focus on recent experiments involving transport and other dynamical aspects of emulsified droplets under nonequilibrium conditions. We include both active emulsions, where individual droplets develop self-propulsion or self-sustained motion at the expense of local energy sources, and driven emulsions, where droplets are activated through the local transduction of an external sou ...
DOI:
10.1016/j.cocis.2020.04.007

14. Liquid Marble-Induced Dewetting

Author:
Roy, Pritam Kumar; Frenkel, Mark; Legchenkova, Irina; Shoval, Shraga; Binks, Bernard P.; Bormashenko, Edward
Source:
Journal of physical chemistry 2020 v.124 no.17 pp. 9345-9349
ISSN:
1932-7455
Subject:
liquids,   etc   ; alcohols; models; physical chemistry;     Show all 4 Subjects
Abstract:
... We explored the wetting regimes inherent to liquid marbles filled with aqueous alcohol placed on water layers of various thicknesses. Very different wetting regimes are observed, depending on the thickness h of the supporting water layer: (i) Marangoni soluto-capillary flow-driven self-propulsion for h ≥ 1.2 mm; (ii) dewetting followed by the retraction of the triple line for 0.63 mm < h < 1.2 mm; ...
DOI:
10.1021/acs.jpcc.0c00968

15. Ionic Liquids as Green Solvents for Reactive Separation of Glutaric Acid from Water

Author:
Baylan, Nilay
Source:
Water, air, and soil pollution 2020 v.231 no.4 pp. 162
ISSN:
0049-6979
Subject:
ionic liquids,   etc   ; glutaric acid; phosphates;     Show all 3 Subjects
Abstract:
... In recent years, ionic liquids as green solvents have been received great attention owing to their remarkable properties. In this context, in the present study, the separation of glutaric acid from water was examined using green solvents instead of conventional organic solvents. As green solvents, four different types of imidazolium-based ionic liquids were utilized. Tributyl phosphate (TBP) was u ...
DOI:
10.1007/s11270-020-04549-3

16. Reversible Photodriven Droplet Motion on Ti₃C₂ MXene Film for Diverse Liquids

Author:
Yu, Jiangping; Lao, Junchao; Chu, Dandan; Wang, Donghong; Tang, Ding; Li, Dayong; Zhu, Guoliang; Dong, Anping; Shu, Da; Peng, Yinghong; Luo, Jiayan; Sun, Baode
Source:
ACS applied materials & interfaces 2020 v.12 no.16 pp. 19194-19200
ISSN:
1944-8252
Subject:
liquids,   etc   ; droplets; heat; lighting; wettability;     Show all 5 Subjects
Abstract:
... The manipulation of liquid droplets on a specific surface with reversible wettability is of great importance for various applications from science to industry. Herein, the concept of a smart, flexible photodriven droplet motion (PDM) device with programmable wettability is designed using the 2D material of MXene film. Because of the MXene photothermal property, the Vaseline layer in the device is ...
DOI:
10.1021/acsami.0c01632

17. Characterization of triacontyl (C-30) liquid chromatographic columns

Author:
Sander, Lane C.; Rimmer, Catherine A.; Wilson, Walter B.
Source:
Journal of chromatography 2020 v.1614 pp. 460732
ISSN:
0021-9673
Subject:
liquid chromatography,   etc   ; isomers; lutein; temperature;     Show all 4 Subjects
Abstract:
... Differences in the characteristics of seventeen commercial C-30 liquid chromatographic columns were studied for the separation of carotenoid isomers. A mixture consisting of nine xanthophyll and hydrocarbon carotenoids were separated under conditions carefully chosen to reveal changes in selectivity. The influence of the mobile phase composition, column temperature, and mobile phase flow rate were ...
DOI:
10.1016/j.chroma.2019.460732

18. Pumping effect of heterogeneous meniscus formed around spherical particle

Author:
Nakamura, Hayate; Ogawa, Tetsuya; Inoue, Motochika; Hori, Takuma; Mu, Lizhong; Yoshikawa, Harunori N.; Zoueshtiagh, Farzam; Dietze, Georg; Tsukahara, Takahiro; Ueno, Ichiro
Source:
Journal of colloid and interface science 2020 v.562 pp. 133-141
ISSN:
0021-9797
Subject:
liquids,   etc   ; droplets; industrial applications; microparticles;     Show all 4 Subjects
Abstract:
... A disturbance such as a microparticle on the pathway of a spreading droplet has shown the tremendous ability to accelerate locally the motion of the macroscopic contact line (Mu et al., 2017). Although this ability has been linked to the particle-liquid interaction, the physical mechanisms behind it are still poorly understood despite its academic interest and the scope of numerous industrial appl ...
DOI:
10.1016/j.jcis.2019.12.005

19. Optimizing design and employing permeability differences to achieve flow confinement in devices for spatial multidimensional liquid chromatography

Author:
Adamopoulou, Theodora; Deridder, Sander; Bos, Tijmen S.; Nawada, Suhas; Desmet, Gert; Schoenmakers, Peter J.
Source:
Journal of chromatography 2020 v.1612 pp. 460665
ISSN:
0021-9673
Subject:
liquid chromatography,   etc   ; fluid mechanics; permeability;     Show all 3 Subjects
Abstract:
... In spatial multi-dimensional liquid chromatography (LC) devices the flow of each dimension has to remain in the corresponding region, otherwise the separation efficiency is undermined. Adequate flow-confinement measures are necessary. Here, the use of permeability differences across different compartments of spatial two-dimensional (2D) and three-dimensional (3D) LC devices as a method to guide fl ...
DOI:
10.1016/j.chroma.2019.460665

20. Deformability and solvent penetration in soft nanoparticles at liquid-liquid interfaces

Author:
Arismendi-Arrieta, Daniel J.; Moreno, Angel J.
Source:
Journal of colloid and interface science 2020 v.570 pp. 212-222
ISSN:
0021-9797
Subject:
liquid-liquid interface; liquids,   etc   ; crosslinking; mixing; molecular dynamics; nanoparticles; permeability; simulation models; solvents; topology;     Show all 10 Subjects
Abstract:
... The internal topology of soft nanoparticles – regular (ideal) vs disordered (realistic) networks – and its intrinsic deformability (degree of cross-linking) influences solvent permeability (uptake, invasive and mixing capacities) under interfacial confinement.By means of large-scale molecular dynamics simulations we study nanogels at liquid-liquid (A-B) interfaces covering the whole range of cross ...
DOI:
10.1016/j.jcis.2020.02.102