Article
Biochemistry & Molecular Biology
Qi Sun, Fu-Tang Hu, Lu Han, Xiu-Yu Zhu, Fan Zhang, Gui-Yang Ma, Lei Zhang, Zhao-Hui Zhou, Lu Zhang
Summary: This paper studied the influences of different surfactants on the viscosity of two polymers, HPAM and HMPAM, and conducted experiments in different reservoir environments. The results showed that surfactants acted as electrolytes to reduce the viscosity of HPAM, while they formed aggregates with the hydrophobic blocks of HMPAM molecules, reducing the bulk viscosity. However, zwitterionic surfactant BSB was able to build bridges between different polymer molecules through hydrogen bonding and electrostatic interaction, resulting in an increase in viscosity.
Article
Chemistry, Multidisciplinary
Ruifeng Liao, Liangliang Shi, Yi Zhou, Chenyue Jia, Jiangtao Feng, Weinong Zhang, Junbo He
Summary: Four novel nonionic 1-alkylaminoglycerol Gemini surfactants were synthesized and characterized. These Gemini surfactants exhibited low CMC, excellent surface-tension-reducing ability, and wetting ability on hydrophobic interface. They formed stable nanoscale dispersion in aqueous solutions and showed strong foaming and emulsifying abilities. Additionally, one of the Gemini surfactants displayed excellent tolerance to wide pH range and high salinity. These surfactants also demonstrated significant antibacterial activities and have potential applications in various fields.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Chemical
Haifeng Tang, Jiamei Song, Mengling Zha, Jincheng He, Zhihu Yan
Summary: In this study, the structure-activity relationship between the molecular structure of Gemini surfactants and foam properties was clarified for the first time. The research results show that Gemini surfactants with sulfonic acid head group have excellent foam properties. Additionally, foam properties increase with the increase of hydrophobic tail chain length and decrease with the increase of spacer group length.
Article
Chemistry, Physical
Yue Gu, Ming Zhou, Xia Wang, Hongjun Tu, Yongzhao Yang, Yanfeng Zhao
Summary: Sulfate-quaternary ammonium amphoteric Gemini surfactants with hydrophobic chains were synthesized and characterized, showing good emulsifying and foaming properties, as well as significant reduction in oil-water interfacial tension.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Yanping Wang, Qiuxia Wang, Yugui Han, Cailing Zheng, Cuiyu Jiang, Chuangye Wang, Longli Zhang
Summary: This study thoroughly investigated the effects of surfactant structure on its physicochemical properties, and explored the influence of different structures on temperature tolerance and salt resistance. The results demonstrated that the length of the polyether chain had the greatest impact on interfacial tension, and surfactants with longer alkyl chains exhibited stronger interfacial film strength.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Nanoscience & Nanotechnology
Yueming Han, Chaomeng Dai, Yanping Duan, Yaojen Tu, Shuguang Liu, Yalei Zhang
Summary: By studying the photosensitivity, surface properties, and solubilization/release ability of two photoresponsive surfactants, it was found that the gemini surfactant AzoPBT exhibited stronger surface properties and solubilization ability, which can effectively dissolve and release phenanthrene in groundwater. This is of great significance for groundwater remediation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Andleeb Z. Naqvi, Kabir-ud-Din, Manorama Panda
Summary: This review focuses on the interactions of gemini surfactants in binary solutions, emphasizing the application of theoretical models in the formation of mixed micelles and various mixed systems. By analyzing existing models, it reveals the mechanisms of interactions between gemini surfactants and other amphiphiles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Le-Chi Zheng, Qing-Xiao Tong
Summary: Two series of novel gemini surfactants with morpholinium headgroup and benzene-based rigid spacers were synthesized and characterized. The surfactants showed superior surface activity and antibacterial properties, with (Mor)m-BP-m exhibiting stronger aggregation tendency compared to (Mor)m-P-m.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Martin Pisarcik, Milos Lukac, Josef Jampilek, L'udmila Paskova, Frantisek Bilka, Andrea Bilkova, Ferdinand Devinsky, Jakub Val'ko, Renata Horakova, Jan Hosek, Matej Brezina, Tomas Opravil
Summary: Gold nanoparticles were prepared and stabilized using Gemini surfactants with varying lengths of poly-methylene spacer. The size of the nanoparticles was found to be influenced by the spacer length of the stabilizing surfactants. Short spacer lengths led to aggregation and larger particle clusters, while longer spacer lengths resulted in smaller nanoparticles. The shape of the gold nanoparticles was observed to be spherical and polyhedral. The nanoparticles exhibited positive zeta potential values and their biological activity was found to be dependent on the spacer length of the stabilizing molecules.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Malik Abdul Rub, Farah Khan, Abdullah M. Asiri
Summary: This study explored the interactions between the antidepressant drug IMP and the ester-bonded gemini surfactant 16-E2-16 through tensiometry technique and spectroscopy. The results showed a strong interaction between the two components, suggesting that 16-E2-16 could be a potential ingredient for drug delivery vehicles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
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
Engineering, Environmental
Yan Bao, Lu Gao, Feitong Wang, Jianzhong Ma
Summary: Gemini surfactants are in high demand globally for their potential applications in paper, medical hygiene, and textile industries. This study focuses on the design and synthesis of Gemini surfactants integrated with biosafety and multi-functionality for environmental protection and cost-effective industrial processes. The effects of three heterocyclic cationic Gemini surfactants with different hydrophilic groups on antibacterial, dispersion, and fixation properties in leather processing are investigated.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Review
Chemistry, Physical
Nilanjan Pal, Hussein Hoteit, Ajay Mandal
Summary: Gemini surfactants, with their diverse molecular structures and stable micellar properties, have the potential to significantly improve the chemical EOR process and bring cost-effective returns for petroleum companies. Their lower CMC compared to monomeric surfactants allows for self-aggregation at low dosages, making them a promising option for enhanced oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Zoya Zaheer, Samia A. Kosa, Mohammad Osama, Mohd Akram
Summary: The study investigated the binding capabilities of flurbiprofen drug with a new type of gemini surfactant using spectroscopic methods, revealing significant interaction and a correlation with the chain length and critical micellar concentration of the surfactant.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Junjun Feng, Zhihu Yan, Jiamei Song, Jincheng He, Guang Zhao, Haiming Fan
Summary: In this study, a series of sulfate Gemini surfactants with variations in hydrophobic tail chains and spacer groups were synthesized and characterized. Their solubility, conductivity, critical micelle concentration, and foaming performance were investigated under different temperature conditions. The study also discussed the relationship between molecular structure and foaming performance, as well as the effect of temperature on foam properties.
CHEMICAL ENGINEERING SCIENCE
(2021)
