Article
Materials Science, Multidisciplinary
Xiaoqiang Wu, Xu Hu, Jifang Xu, Lijuan Su, Jieyu Zhang
Summary: The wetting behavior of molten CaO-Al2O3-MgO-FeO slag on BN substrate was investigated at various temperatures and FeO contents. It was found that the initial contact angle decreases with increasing temperature and FeO content. The surface tension of the slag decreases with increasing FeO content and temperature, and the interfacial tension between the slag and BN substrate shows a similar trend. The interfacial tension is influenced by the modifications in the slag structure caused by FeO addition. The optical basicity is inversely correlated with the interfacial tension, providing a measure of the concentrations of free oxygen ion in the molten slag.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Thermodynamics
Dong-Sheng Guo, Xiao-Bin Li, Hong-Na Zhang, Feng-Chen Li, Ping-Jian Ming, Masamichi Oishi, Marie Oshima
Summary: The study investigates the temperature dependence of surface/interfacial properties of liquids, finding a decreasing trend of surface tension and contact angle with temperature increase. Different dynamic behaviors of droplets are observed for ultra-pure water and surfactant solutions in different stages.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Mechanics
Valeria A. Dekhtyar, Alexander E. Dubinov
Summary: This paper experimentally studied the states of liquid drops on a horizontally elastic substrate that was cyclically stretched and weakened. A thin rubber band served as the substrate, and glycerin was used as the liquid. The study discovered a multi-branch hysteresis of the drop states, which could be adjusted by changing the time program for stretching and loosening the substrate tension.
Article
Physics, Multidisciplinary
Mehdi Molaei, Nicholas G. Chisholm, Jiayi Deng, John C. Crocker, Kathleen J. Stebe
Summary: Understanding the flow dynamics created by particle motion at interfaces is crucial for studying hydrodynamic interactions and colloidal self organization. Correlated displacement velocimetry has been developed to measure flow fields around interfacially trapped particles, providing key insights into the interface's mechanical response. The flow structure also contains information about interfacial properties and hydrodynamic coupling with the bulk fluid, enabling predictions of the interface's response to applied complex forces.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Glen McHale, Nasser Afify, Steven Armstrong, Gary G. Wells, Rodrigo Ledesma-Aguilar
Summary: Liquid-liquid interfacial tensions can be deduced from the apparent contact angles on SLIPS, providing valuable insight into liquid-liquid interactions and the wetting of a liquid surface by another liquid.
Article
Energy & Fuels
Shiqi Liu, Xumeng Chen, Yongjun Peng
Summary: This study found that adjusting the contact angle of coal particles, rather than the air-liquid interfacial tension, can effectively deaerate overly stable coal froth. Hydrocarbon surfactants DOSS and SDBS were found to be more effective deaerants, while fluorocarbon surfactant PFOA showed limited effectiveness.
Article
Chemistry, Physical
Chengyu He, Tie Liu, Peng Miao, Shuang Yuan, Jun Wang, Qiang Wang
Summary: This study demonstrates the impact of high magnetic fields on the wettability of water and ionic solutions on single-crystal alpha-Al2O3. The results show that high magnetic fields decrease water contact angles on all surface orientations, with a larger reduction observed for more magnetic substrates. Additionally, the contact angle of ionic solutions is increased on the (0001) alpha-Al2O3 surface but decreased on the (1120), (1010), and (0112) surfaces. These findings highlight the importance of substrate crystal orientation, material magnetism, and liquid conductivity in determining the response of water and ionic solutions to high magnetic fields.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Engineering, Chemical
Siti Hasyyati Drahman, Ahmad Beng Hong Kueh, Ahmad Razin Zainal Abidin
Summary: The compatibility of different materials in composites is traditionally determined using contact angle measurement, which is cumbersome and requires specific equipment. This paper presents a simplified approach to determine surface wettability by incorporating novel generalized expressions that consider the interfacial interaction compatibility of composites. A water probe method is used to measure apparent contact angles, which fit well within established thresholds. New mathematical expressions incorporating adhesion concept are derived to describe the relationship between apparent contact angles and liquid-solid interfacial tension. These equations provide a reliable means to determine compatibility relationships of composite constituents.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hao Zhang, Shan Qing, Xiaoyan Huang, Xiaohui Zhang, Aimin Zhang
Summary: The interfacial properties of conventional and functional modified nanofluids, including tension and contact angle, were experimentally investigated. The results showed that the surface tension of both types of nanofluids decreased with increasing nanoparticle concentration and temperature. The contact angle was affected by the surface roughness of copper plates as well as the nanoparticle loading. The surface tension and contact angle of conventional nanofluids decreased with increasing surfactant concentration.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Yanjun Sun, Jian Wang, John M. Prausnitz
Summary: Ionic liquids are potential alternatives to conventional solvents in lithium-ion batteries due to their high-voltage operating window and improved safety. Wetting properties of IL-based electrolytes on a LIB separator were studied, with findings showing improved wettability with the addition of DMC and detrimental effects with the addition of PC. The influence of different lithium salts on contact angles and surface tensions was also observed, with TFSI- anion contributing to favorable separator wettability.
Article
Chemistry, Physical
Hemant Kumar, Siliveru Upendar, Ethayaraja Mani, Madivala G. Basavaraj
Summary: We propose a method to destabilize Pickering emulsions by transiently perturbing the oil-water interface through the transport of a mutually soluble solute. Visual observation and bright field optical microscopy are used to record the macroscopic and microscopic changes induced in these highly stable emulsions. The method is shown to be effective for different types of solutes and stabilizers, and for both oil-in-water (o/w) and water-in-oil (w/o) emulsions with different non-polar solvents as the oil phase.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Anurag Mishra, Pankaj Tiwari, Lalit Mohan Pandey
Summary: This study investigated the variations in thermodynamic and physicochemical properties of the rhamnolipid-salt system. The results showed that the addition of salts significantly reduced the critical micelle concentration (CMC) and surface tension of rhamnolipids, leading to changes in wettability and the formation of agglomerated structures.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Sreya Sarkar, Mohamad Jafari Gukeh, Tamal Roy, Harshad Gaikwad, Francesco Maria Bellussi, Shashwata Moitra, Constantine M. Megaridis
Summary: The interfacial energy between a solid and a liquid plays a crucial role in determining the macroscopic wettability of the surface by the fluid and is essential for controlling fluid-transport phenomena in commercial devices/products. While there are indirect or theoretical methods to quantify this energy, there is a lack of direct experimental procedures for measuring it on realistic rough surfaces. This study proposes a methodology that utilizes dynamic contact-angle experiments on rough surfaces to determine the interfacial energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Priyanka Dhar, Maria Thornhill, Sophie Roelants, Wim Soetaert, Irina V. Chernyshova, Hanumantha Rao Kota
Summary: Yeast-derived bola amphiphiles, such as acidic sophorolipid, acidic glucolipid, and alcoholic glucoside, have shown potential for separating copper sulfides in froth flotation. Acidic sophorolipid was found to be the most effective collector, while alcoholic glucoside performed poorly. The pH-responsive nature of the biosurfactants' self-assembly at the air-water interface was identified as a crucial factor affecting their flotation properties.
MINERALS ENGINEERING
(2021)
Article
Chemistry, Physical
Shu-Yu Chang, Yu-Jane Sheng, Heng-Kwong Tsao
Summary: The supercooled liquid state of a deep eutectic solvent (DES) composed of a mixture of choline chloride and citric acid monohydrate (CA) was studied. The viscosity of the supercooled DESs, which increased with higher CA content, could be described by an Arrhenius equation. Surface tensions were considerably high, comparable to that of water, and slightly decreased with higher CA concentration. The wetting behavior of supercooled DESs on glass was characterized by an unusually slow spreading process, and the equilibrium contact angle increased with higher CA content.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Rossen Sedev
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2015)
Article
Chemistry, Multidisciplinary
M. Ramiasa-MacGregor, A. Mierczynska, R. Sedev, K. Vasilev
Article
Engineering, Chemical
Namsoon Eom, Victoria Stevens, A. Bruce Wedding, Rossen Sedev, Jason N. Connor
ADVANCED POWDER TECHNOLOGY
(2014)
Article
Chemistry, Physical
Craig Priest, Rossen Sedev, John Ralston
COLLOID AND POLYMER SCIENCE
(2013)
Article
Chemistry, Physical
Catherine P. Whitby, Xun Bian, Rossen Sedev
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2013)
Article
Chemistry, Multidisciplinary
Melanie Ramiasa, John Ralston, Renate Fetzer, Rossen Sedev, Doris M. Fopp-Spori, Christoph Morhard, Claudia Pacholski, Joachim P. Spatz
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Article
Chemistry, Multidisciplinary
Hua Li, Mani Paneru, Rossen Sedev, John Ralston
Article
Chemistry, Physical
Agnieszka Mierczynska, Andrew Michelmore, Abhishek Tripathi, Renee V. Goreham, Rossen Sedev, Krasimir Vasilev
Article
Chemistry, Physical
Catherine P. Whitby, Rebecca McVicker, Jason N. Connor, Rossen Sedev
Article
Chemistry, Multidisciplinary
Renee V. Goreham, Agnieszka Mierczynsk, Louise E. Smith, Rossen Sedev, Krasimir Vasilev
Article
Chemistry, Multidisciplinary
Craig Priest, Syed F. Hashmi, Jingfang Zhou, Rossen Sedev, John Ralston
JOURNAL OF FLOW CHEMISTRY
(2013)
Article
Engineering, Chemical
Deepali Arora, Rossen Sedev, Chau Chun Beh, Craig Priest, Neil R. Foster
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Analytical
Marta K. Orlowska, Bin Guan, Rossen Sedev, Yasuhiro Morikawa, Koukou Suu, Craig Priest
ANALYTICAL CHEMISTRY
(2020)
Article
Geosciences, Multidisciplinary
Rossen Sedev, Hamed Akhondzadeh, Mujahid Ali, Alireza Keshavarz, Stefan Iglauer
Summary: Rock wettability is a key factor in the storage of hydrogen, affecting its capacity and safety. The study found that under realistic storage conditions, the surface of bituminous coal exhibited weak water-wettability. The pressure of hydrogen increased the contact angles of brine on the coal surface at 25 degrees C but had no impact at higher temperatures. A thermodynamic model was proposed to describe the observed behavior, supporting the development of large-scale geostorage technologies for hydrogen.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Proceedings Paper
Nanoscience & Nanotechnology
Catherine P. Whitby, Xun Bian, Rossen Sedev
POWDERS AND GRAINS 2013
(2013)
