Article
Chemistry, Physical
Dengxi Zhang, Zhicheng Xu, Zhiqiang Jin, Lei Zhang, Lu Zhang, Fenrong Liu, Wangjing Ma
Summary: This study investigated the adsorption behavior and wetting modification ability of sodium salts of bis-octadecenoyl succinate (GeminiC3, GeminiC6) and monomers on polymethyl methacrylate (PMMA) surfaces. The different spacer lengths resulted in slightly different behavior of surfactant molecules in solution. GeminiC3 exhibited complex self-aggregation behavior, forming micelles at low concentrations and transitioning to monolayer or multilayer vesicles. GeminiC6 had longer flexible spacer groups that hindered vesicle formation. Adsorption behavior at the gas-liquid interface was analyzed in three stages, showing a saturated monolayer and bilayer structure formed by GeminiC3 and C6 on PMMA surfaces. The monomers heavily adsorbed on PMMA surfaces and formed semi-colloidal aggregates, with the lowest contact angle reaching 38 degrees. Additionally, the monomers and GeminiC3/C6 surfactants demonstrated high hydrophilic modification ability on PMMA surfaces compared to other literature.
Article
Energy & Fuels
Soumik Das, Amit Katiyar, Neeraj Rohilla, Roger T. Bonnecaze, Quoc Nguyen
Summary: Oil recovery tests showed that surfactants can enhance oil recovery, with the best recovery rates observed at intermediate water saturations and sulfate ions having a positive effect on wettability alteration.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Ahmed Al-Ghamdi, Bashirul Haq, Dhafer Al-Shehri, Nasiru S. Muhammed, Mohamed Mahmoud
Summary: This study investigates the efficacy of green surfactants in sandstone reservoirs for chemical enhanced oil recovery. The results show that the RL formulation, consisting of rhamnolipid, alkyl polyglycoside (APG), and lecithin, performed the best in terms of phase behavior, interfacial tension, and core-flooding experiments, with a tertiary recovery of 24% and a total recovery of approximately 70%. These findings contribute to a better understanding of injection design and biosurfactant formulation selection for green enhanced oil recovery technology.
Article
Chemistry, Multidisciplinary
Martin Kapp, Chunde Li, Zeqian Xu, Aldo R. Boccaccini, Kai Zheng
Summary: Bioactive glass nanoparticles (BGNs) were successfully synthesized with controllable Ca content, showing that the Ca did not significantly affect particle size and structure. The study revealed that the Ca content in BGNs is related to their protein adsorption behavior, with an initial increase in protein adsorption over time but a subsequent reduction with further incubation, especially in BGNs with higher Ca content.
Article
Biophysics
Michael M. Krycki, Shi-Yow Lin, Giuseppe Loglio, Alexander V. Michailov, Reinhard Miller, Boris A. Noskov
Summary: The addition of denaturants strongly affects the surface properties of aqueous myoglobin solutions, leading to different effects compared to mixed solutions with other globular proteins. The dynamic surface elasticity of myoglobin solutions with GuHCl shows at least two adsorption steps at denaturant concentrations higher than 1 M, a rapidly increasing elasticity followed by a slower growth to abnormally high values. Protein aggregation in the surface layer may contribute to the higher surface elasticity in myoglobin/GuHCl solutions, with evidence supported by ellipsometry and Brewster angle microscopy. Surfactant addition to protein solutions results in the formation of myoglobin/surfactant complexes, displaying multi-step adsorption kinetics different from solutions of other globular proteins mixed with ionic surfactants. Ellipsometry and infrared reflection-absorption spectroscopy allow tracking the adsorption and displacement of the complexes at high surfactant concentrations.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Physical
Inseok Chae, Andy Han, Jagan Sundaram, Seung-Wuk Lee
Summary: This study investigates the molecular interactions of therapeutic proteins at a liquid-glass interface and finds that reducing electrostatic attractions in the solution can significantly reduce the aggregation and adsorption of the proteins. The study also shows that PEGylation enhances the stability of the therapeutic proteins at the interface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Medicine, Research & Experimental
Alina Kulakova, Dillen Augustijn, Inas El Bialy, Lorenzo Gentiluomo, Maria Laura Greco, Stefan Hervo-Hansen, Sowmya Indrakumar, Sujata Mahapatra, Marcello Martinez Morales, Christin Pohl, Marco Polimeni, Aisling Roche, Hristo L. Svilenov, Andreas Tosstorff, Matja Zalar, Robin Curtis, Jeremy P. Derrick, Wolfgang Friess, Alexander P. Golovanov, Mikael Lund, Allan Norgaard, Tarik A. Khan, Gunther H. J. Peters, Alain Pluen, Dierk Roessner, Werner W. Streicher, Christopher F. van der Walle, Jim Warwicker, Shahid Uddin, Gerhard Winter, Jens Thostrup Bukrinski, Asmund Rinnan, Pernille Harris
Summary: Therapeutic proteins are difficult to develop due to their complexity and the need for an acceptable formulation. A universal formulation strategy is currently lacking. This study used high-throughput characterization to analyze 14 different proteins formulated under various conditions. pH and ionic strength were identified as the most important factors affecting protein stability. Prediction methods were also developed for real-time and accelerated stress stability.
MOLECULAR PHARMACEUTICS
(2023)
Article
Chemistry, Multidisciplinary
Florian Mahler, Annette Meister, Carolyn Vargas, Gregory Durand, Sandro Keller
Summary: The use of specific amphiphilic molecules can directly assemble lipids and membrane proteins to form native nanodiscs, rather than mixed micelles. Detailed investigation into the lipid bilayer integrity and membrane protein activity in these nanodiscs reveals gentle effects.
Article
Chemistry, Physical
Kiet G. Pham, Benjamin R. Thompson, Tingting Wang, Shayak Samaddar, Ken K. Qian, Yun Liu, Norman J. Wagner
Summary: By measuring the interfacial viscoelasticity and surface pressure of mAbs at the air-water interface, we can predict their long-term stability, which is crucial in the pharmaceutical industry.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Energy & Fuels
Xiujuan He, Jun Qiu, Leyu Cui, Hui Zhang, Zhiqin Shen, Junwei Ma, Yingcheng Li
Summary: A novel RNEC surfactant is designed to enhance the foam properties of AOS surfactant for enhanced oil recovery under high-temperature conditions. The AOS/RNEC binary blend generates stronger foam faster in sandpack compared to AOS only. The enhanced foam performance is maintained over a wide range of salinity and divalent ion concentration.
Article
Chemistry, Physical
Damian K. Kaczmarek, Tomasz Rzemieniecki, Daniela Gwiazdowska, Tomasz Kleiber, Tadeusz Praczyk, Juliusz Pernak
Summary: This study focused on the synthesis of new biobased ionic liquids for their potential use as herbicide additives. The research examined the influence of anions of natural or synthetic origin on the physicochemical properties of the compounds and found a correlation between the surface wettability of tank mixes and their biological activity.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Quynh P. Ngo, Maggie He, Alberto Concellon, Kosuke Yoshinaga, Shao-Xiong Lennon Luo, Nouf Aljabri, Timothy M. Swager
Summary: This study successfully achieved the formation of complex biphasic emulsions containing hydrocarbons and fluorocarbons by utilizing Meisenheimer complexes on carbon nanotubes. The strong affinity of fluorofluorescent perylene bisimide to the CNTs enhanced the assembly of CNTs on the FC-water interface, allowing for predictable complex emulsion morphologies. The interfacial properties of functionalized CNTs have significant utility in the fabrication of complex dynamic emulsions.
Article
Materials Science, Ceramics
Jacopo Barberi, Luisa Mandrile, Andrea M. Giovannozzi, Marta Miola, Lucia Napione, Andrea M. Rossi, Alessandra Vitale, Seiji Yamaguchi, Silvia Spriano
Summary: This paper reports the effect of silver doping on the interaction between a silica-based bioactive glass and albumin and fibronectin. The presence of silver significantly increases the adsorption of albumin and fibronectin and leads to a higher loss of secondary structure. It is also observed that proteins are embedded inside the surface reaction layer during adsorption due to the formation of a hydrated silica gel layer.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Sara Ranjbari, Ali Ayati, Bahareh Tanhaei, Amani Al-Othman, Fatemeh Karimi
Summary: In this study, bi-functionalized chitosan beads were successfully prepared and used for the efficient removal of anionic food dye from polluted water. The experimental data showed high adsorption efficiency, fitting well with the pseudo-first-order kinetic model and the Langmuir isotherm model under optimal conditions. The conjugation of chitosan beads with surfactant and ionic liquid introduced a new type of adsorbents for wastewater treatment.
ENVIRONMENTAL RESEARCH
(2022)
Review
Materials Science, Ceramics
Xiaonan Lu, John D. Vienna, Jincheng Du
Summary: Glass is a versatile material with various applications. This paper focuses on the development of precise property models for glass compositions using large databases and efficient formulation approaches. It reviews analytical and numerical models based on composition-structure-property relations and discusses aspects such as data collection, model fitting, feature extraction, model evaluation, and uncertainty quantification. The paper also summarizes advances in the glass optimization framework and available tools and provides an outlook for further development in glass property models and formulation approaches.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
