Article
Construction & Building Technology
Gaoshang Ouyang, Lianjie Wu, Chuxiong Ye, Jingsong Wang, Teng Dong
Summary: This study explores the fluidity modification of geopolymer without changing its compositions. By optimizing the oxides molar ratios and studying the influence of silane coupling agent (SCA), it was found that a specific ratio led to the best fluidity and compressive strength. Addition of an appropriate amount of SCA can decrease viscosity and increase fluidity, while excess SCA has negative effects.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Shuyun Feng, Zhaowen Jiang, Shanfa Tang, Ruizhi Hu, Lijun Jin, Siyao Wang, Rui Wang
Summary: A series of new Gemini surfactants were synthesized and characterized, showing good interfacial activity and low CMC values, promising for oil recovery in low permeability reservoirs. Varying the carbon number of the hydrophobic chain can control the surface activity and viscoelastic properties, helping to increase the oil-water interfacial tension and enhance oil recovery efficiency in reservoirs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Na Wang, Yuanyuan Zhang, You Li, Yang Liu, Ce Wang, Bo Xu, Li Zhao, Baocai Xu
Summary: This study synthesized a series of cholesteryl-oligopeptide surfactants and found that the presence of a cholesteryl group enhanced their ordered assembly at interfaces. The number and type of amino acids/oligopeptides significantly influenced the interfacial properties of the surfactants. The synergy of multiple hydrogen bonds and strong van der Waals forces inhibited the relaxation processes at the interface and decreased the interfacial viscoelasticity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Tianzhong Yuan, Jinsong Zeng, Bin Wang, Zheng Cheng, Kefu Chen
Summary: The study investigated the stabilization mechanism induced by different morphologies of cellulosic fiber in O/W emulsion, finding that completely nanofibrillated cellulose formed a denser covering layer with higher stability and bridging flocculation capacity, resulting in a stronger droplet-fiber 3D network structure.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Applied
Jinjing Sun, Cuihua Chang, Yujie Su, Luping Gu, Yanjun Yang, Junhua Li
Summary: This study found that adding different types of saccharides can enhance the foam performance of egg white liquid, with the best foam properties achieved when 3% maltodextrin is added to the compound egg white solution, resulting in the smallest and most homogeneous bubbles in the foam.
FOOD HYDROCOLLOIDS
(2022)
Article
Polymer Science
R. A. Korokhin, A. Shapagin, V. Solodilov, U. G. Zvereva, D. Solomatin, Yu A. Gorbatkina
Summary: The study shows that the introduction of PEI significantly affects the kinetics and structure of epoxy resin curing, reducing the curing time and changing the structure to a complex bicontinuous one with increasing PEI concentration. The Young modulus of the cured compositions differs by no more than 15%, and the glass transition temperature of the matrix with the addition of PEI increases.
Article
Chemistry, Multidisciplinary
Qin Jiang, Miao Liu, Luo-Peng Xu, Zi-Ling Lu, Lei Zhang, Lu Zhang
Summary: The effect of molecular size of alkanes and cavity size of cyclodextrins (CDs) on the formation of interfacial host-guest inclusion complexes was investigated. It was found that the space compatibility between CDs and oil molecules is crucial for the formation of these complexes. The formation of interfacial inclusion complexes lead to lower interfacial tension, higher interfacial dilational modulus, non-linear interfacial tension responses, and skin-like films at the oil-water interface.
Article
Chemistry, Applied
Tong Wang, Ning Wang, Yajie Dai, Dianyu Yu, Jinju Cheng
Summary: An oleogel-in-water emulsion system was created using hemp seed protein (HSP) and hemp seed oil oleogel. The research investigated the impact of different HSP concentrations on the emulsion system's properties. The results showed that increasing HSP concentration initially decreased and then increased the particle size of the emulsion, reaching the minimum at 3% HSP concentration. At this concentration, the emulsion had optimal zeta-potential, adsorbed protein content, surface tension, and roughness. Higher HSP concentration also led to increased viscosity and improved resistance to external pressure. Additionally, increasing HSP concentration enhanced the diffusion, adsorption, and rearrangement rate of HSP at the oil-water interface. The study also found that after 14 days of storage, the tetrahydrocannabinol retention rate was 92.86%. Finally, an oxidation kinetic model was established to predict changes in peroxide value of hemp seed oil based on storage temperature and time.
FOOD HYDROCOLLOIDS
(2023)
Review
Engineering, Chemical
Badri Vishal
Summary: Although aqueous foam is composed of simple fluids, it shows complex rheological behavior. Understanding this behavior is important for industrial applications in various fields. The stability of foam is related to the air-water interface, and the rheological properties of aqueous foam highly depend on its interfacial properties.
REVIEWS IN CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Yunyi Yang, Juyang Zhang, Yang Liu, Linhe Wu, Qing Li, Mengyue Xu, Zhili Wan, To Ngai, Xiaoquan Yang
Summary: The study demonstrates that steviol glycosides are highly pH-sensitive, with their emulsifying properties significantly influenced by pH. The adsorption behavior and emulsifying properties depend on the pH value. At low concentrations, STE-SPI complex dominates the adsorption, resulting in enhanced emulsifying ability; at high concentrations, STE preferentially adsorbs, affecting the emulsifying properties.
FOOD HYDROCOLLOIDS
(2022)
Article
Polymer Science
Mojtaba Mohammadi, Marie-Claude Heuzey, Pierre J. Carreau, Aurelie Taguet
Summary: This study investigated the effect of interfacial localization of cellulose nanocrystals (CNCs) on the properties of PLA/PBAT blends. The results showed that CNCs significantly improved the mechanical properties and crystallization behavior of the blends by impeding relaxation of dispersed PBAT droplets and converting the morphology into a co-continuous structure.
Article
Biophysics
Tatyana F. Svitova, Meng C. Lin
Summary: A novel methodology was developed to assess evaporation through lipid-nanofilms in vitro, with comparisons made to human tear-lipid nanofilms. The study found differences in evaporative fluxes and rheology between lipid-nanofilms and human tear-lipid nanofilms. Additionally, the research discovered that evaporation through lipid nanofilms decreased with film thickness and aging, and that polar phospholipids enhanced evaporative resistance.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Applied
Long Sheng, Linlin Zu, Meihu Ma
Summary: The research revealed that High Pressure Carbon Dioxide treatment can enhance the solubility and surface properties of liquid whole egg, improve its foaming ability and stability, and decrease the apparent viscosity, leading to better rheological properties.
Article
Chemistry, Physical
Penghui Zhao, Tianxiang Du, Ning Ma, Xufeng Dong, Min Qi
Summary: The microstructure and shear properties of the interface between carbonyl iron particles (CIPs) and dimethyl silicone oil (DSO) are studied using molecular dynamics simulation. Results show strong adhesive strength between Fe atoms on the surface of CIPs and DSO molecular chains during the shearing process. The interfacial shear strength is significantly higher with high viscosity DSO due to the entanglement between long chains.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Esteban Cea-Klapp, Ilya Polishuk, Bastian Gonzalez-Barramuno, Roberto Canales, Nicolas Gajardo-Parra, Hector Quinteros-Lama, Jose Matias Garrido
Summary: The research aims to provide an accurate description of the interfacial behavior in the hydrogen-methane system under high pressure and calculate its macroscopic and microscopic properties. The modeling framework is compared with molecular dynamics simulations, showing both methods provide accurate estimations over a broad range of thermodynamic conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)