Article
Chemistry, Physical
Min Zhang, Wanli Kang, Hongbin Yang, Zhe Li, Xinxin Li, Bobo Zhou, Xin Kang, Menglan Li, Bauyrzhan Sarsenbekuly
Summary: This study investigates the application of erucic acid amidopropyl-betaine (EDAB) and sodium alkyl sulfate (SDS) in constructing worm-like micelle systems for enhanced oil recovery. The results demonstrate that under specific conditions, the EDAB/SDS system exhibits viscoelastic fluid behavior, forming longer linear worm-like micelles and larger network structures. The rheological properties of the EDAB/SDS system are influenced by pH, temperature, and salt concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Suman Chowdhury, Atanu Rakshit, Animesh Acharjee, Dileep Kumar, Bidyut Saha
Summary: This study aims to oxidize a long chain hydrophobic alcohol in water with the assistance of micellar substances. The kinetics of 1-octanol oxidation by Ce(IV) in different micellar media has been investigated, and effective catalytic effects of trivalent ruthenium and iridium metal salts have also been observed. The results provide insights into the characteristics of the oxidation reaction and the potential applications of these metal salts in micellar media.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Ourania Oikonomidou, Margaritis Kostoglou, Thodoris Karapantsios
Summary: The study explores the interfacial arrangement and viscoelastic properties of mixed surfactants at the air-liquid interface. The results show the displacement of anionic sodium oleate by nonionic surfactants at the interface, which is dependent on the hydrophilic part and hydrophobic chain of the nonionic surfactant.
Article
Materials Science, Multidisciplinary
Raghda Abo Gabal, Sabreen Osama, Nemany Hanafy, Ahmed Oraby
Summary: Fluorescence parameters are sensitive to changes in the microenvironment of fluorophores, making them useful for studying hydrophobic interactions in protein and membrane biology. This study investigated the critical micelle concentration (CMC) of mixed micelles of SDS and DPC using fluorescence intensity measurements. The results showed that the CMC follows a parabolic curve as a function of temperature, with a minimum at T=308 K. The micellization process was found to be exothermic and favorable, with decreasing enthalpy and entropy values as temperature increased. The compensation temperature (Tc) ranged from (313-318) K for all surfactants and mixed micelles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Atanu Rakshit, Suman Chowdhury, Animesh Acharjee, Bidyut Saha
Summary: This study presents an organic oxidative transformation of decanol using hexavalent chromium in anionic micellar assisted aqueous medium at 25 degrees C. The kinetics of the oxidation were studied spectrophotometrically in single and mixed micellar media of anionic surfactants SDS and SDS modifier prime. A comparative kinetic study of promoted and unpromoted reactions was also conducted in the micellar system. The connection between reaction rate and critical micelle concentration (CMC) of surfactants was demonstrated. Spectral analyses were performed to elucidate the product formation using IR and 1H NMR.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Sanbao Dong, Jiabao Fan, Chenwei Liu, Yongli Yan, Weiwei Han
Summary: In this study, foaming supramolecular complexes were synthesized using C12 amide, C16 amide, and coconut amide, together with optimized Asp and LSS formulas, for foam-based deliquification treatment in gas wells. The C12 amide-Asp-LSS-CAPB complex showed better condensate tolerance compared to the C16 amide-Asp-LSS-CAPB complex. NTA was found to significantly enhance the adaptability of the C12 amide-Asp-LSS-CAPB complex to salinity. The C12 amide-Asp-LSS-CAPB complex exhibited good deliquification performance in the temperature range of 25°C-90°C.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Qingguo Wang, Lina Tuo, Gang Zhou, Yuanyuan Zhang, Xu Geng, Fasong Zhang, Yonghe Li
Summary: The study revealed that adding nonionic silicones to surfactant solutions can effectively reduce surface tension and wetting time, but has varying effects on foam performance. The difference mainly stems from the different electronegativity between the head groups of anionic and nonionic surfactants, affecting the insertion of nonionic silicones in the liquid film, thus altering foam performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Xuzhi Hu, Haoning Gong, Peter Hollowell, Mingrui Liao, Zongyi Li, Sean Ruane, Huayang Liu, Elias Pambou, Najet Mahmoudi, Robert M. Dalgliesh, Faheem Padia, Gordon Bell, Jian R. Lu
Summary: The study found that unlike nonionic surfactants, the micellar structures of ionic and zwitterionic surfactants remain unchanged upon pesticide solubilisation. Electrolytes slightly affect the micellar structures of ionic surfactants, but have no impact on nonionic and zwitterionic surfactants. Pesticide solubilisation could alter the structures of binary mixtures of ionic/zwitterionic and ionic/nonionic micelles.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Sania Amjad, Saadia Shaukat, Hafiz Muhammad Abd Ur Rahman, Muhammad Usman, Zahoor H. Farooqi, Muhammad Faizan Nazar
Summary: This study focuses on the interaction between cationic dye methylene blue (MB) and anionic surfactant sodium dodecyl sulfate (SDS), as well as its mixed micelles with nonionic surfactant Triton X-114 (TX-114). The results show that the mixed micellar system is more effective in removing and solubilizing MB from aqueous systems. However, an increase in the concentration of the nonionic surfactant weakens the dye-surfactant interaction in the ionic-nonionic mixed micellar system.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Xue Liang, Jun Dong, Weihong Zhang, Yanyang Mo, Yan Li, Jing Bai
Summary: This study investigates the solubilization of chlorinated hydrocarbons using synthesized anionic-nonionic gemini surfactants (GEOnS-m) in an aquifer. The results show that the solubilization rate increases with the decrease of ethylene oxide content (EO) of the surfactant molecules, and the solubilization process and form depend on the polarity of the chlorinated hydrocarbons. The study advances the application of anionic-nonionic gemini surfactants in surfactant-enhanced aquifer remediation (SEAR) for chlorinated hydrocarbon solubilization, providing important insights for the design and modeling of such processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Chemistry, Physical
Zizhao Wang, Caili Dai, Jiawei Liu, Yunbo Dong, Jinming Liu, Ning Sun, Lin Li
Summary: This study investigates the synergistic effect and enhanced oil recovery potential of a compound surfactant system composed of N, N-dihydroxyethyl alkyl amide (CDEA) and Alkylphenol polyoxyethylene carboxylate (APEC). The results reveal the importance of compound surfactant systems in EOR, as they can increase surface density, improve interfacial activity, and decrease interfacial tension, leading to enhanced oil recovery and higher oil displacement efficiency. The study also highlights the significance of understanding the interactions between surfactant molecules for practical application and optimization in oilfield development.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Long Su, Jichao Sun, Feng Ding, Xinpei Gao, Liqiang Zheng
Summary: The study investigated the oil/water interfacial properties of different zwitterionic surfactant combined with an anionic surfactant. Results showed that the synergistic effect between surfactants is greatly affected by the aromatic cation part of the zwitterionic surfactants. The adsorption mechanisms and compactness of the surfactant monolayer at the oil/water interface vary in different systems, influencing the oil/water interfacial tension.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
S. K. Md Ali Ahsan, Shamim Mahbub, Md Ruhul Amin, Javed Masood Khan, Md Anamul Hoque, Ajamaluddin Malik, Anwar Ahmed, Mohammad Z. Ahmed, Md Khalid Anwer
Summary: The study investigated the interaction of lomefloxacin hydrochloride (LMFH) drug with anionic and nonionic surfactants in electrolyte media, showing that the critical micelle concentrations of the anionic surfactant increased with the LMFH concentration while the cloud point values of the mixtures decreased with increasing temperature.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Construction & Building Technology
Yogiraj Sargam, Kejin Wang, Ayuna Tsyrenova, Fei Liu, Shan Jiang
Summary: Different surfactants were used to disperse nanosilica in cement pore solution, with results showing that nonionic surfactants led to improved dispersibility and linear increase in compressive strength of cement-nanosilica pastes. Among all surfactants, Triton X-405 had the highest critical micelle concentration and resulted in the highest strength increase attributed to the nucleation of CSH gel and densification with calcite nanocrystals.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Engineering, Environmental
Anastasia Nickerson, Alix E. Rodowa, David T. Adamson, Jennifer A. Field, Poonam R. Kulkarni, John J. Kornuc, Christopher P. Higgins
Summary: This study sampled and analyzed soil and groundwater from an AFFF-impacted site, finding that PFAS concentrations were generally higher at depth than near the surface. In FTA soil, zwitterionic and cationic compounds were the major components of total PFAS mass. The composition of PFAS class, chain length, and structural isomers changed with depth and distance from the FTA, suggesting in situ transformation and differential transport.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
