Article
Chemistry, Physical
Han Zhao, Wanli Kang, Hongbin Yang, Zitong Huang, Bobo Zhou
Summary: The study showed that the combination system of amphiphilic polymer and surfactant exhibited better emulsifying ability and emulsion stability compared to using either component alone. The improvement was attributed to the low interfacial tension generated by the addition of surfactant, as well as higher external viscosity and stronger interfacial film strength in the emulsion formed by the combination system. These factors collectively slowed down emulsion droplet migration velocity and prevented droplet coalescence, ultimately increasing emulsion stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Jianbin Liu, Liguo Zhong, Chaohui Lyu, Yigang Liu, Shoujun Zhang
Summary: The study analyzes the influence of W/O emulsions on efficient heavy oil recovery and simulates the re-emulsification process of W/O emulsions, exploring the generation and properties of W/O emulsions during heavy oil recovery. The results show significant variations in the generation of W/O emulsions under different conditions as well as the emulsion droplet size and fluidity after re-emulsification.
Review
Food Science & Technology
Zijian Zhi, Rui Liu, Wenjun Wang, Koen Dewettinck, Filip Van Bockstaele
Summary: This review summarizes the research advances of O/W/O double emulsions over the past two decades, focusing on preparation strategies, stabilization mechanism, and potential applications. Various emulsification strategies, interfacial stabilizers, and viscosity effects on stability are discussed. Analytical methods for evaluating stability and possible innovative food applications are also highlighted.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Mechanics
Menglan Li, Wanli Kang, Zhe Li, Hongbin Yang, Ruxue Jia, Yingqi He, Xin Kang, Zhongwen Zheng, Yongdong Wang, Bauyrzhan Sarsenbekuly, Maratbek Gabdullin
Summary: Nanoemulsions with small particle size, uniform dispersion, and long-term stability were prepared using the emulsification inverse phase method at a constant temperature. The effects of emulsifier and water content, salinity, and reservoir temperature on the stability of the nanoemulsion were studied, with results showing that increasing emulsifier content can enhance stability. The oil washing efficiency of the nanoemulsion can reach as high as 83%, providing theoretical support for efficient flooding systems in low-permeability reservoirs.
Article
Chemistry, Physical
Han Jia, Jiajun Dai, Lingchun Miao, Xin Wei, Hongtao Tang, Pan Huang, Haidong Jia, Juan He, Kaihe Lv, Dexin Liu
Summary: The study successfully synthesized amphiphilic Janus-SiO2 nanoparticles Janus-C12 and observed phase inversion of different stabilized emulsions, proposing possible emulsification mechanisms; systematically studied the stability and influencing factors of multiple O/W/O emulsions, demonstrating their potential application in enhanced oil recovery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Polymer Science
Mamdouh T. Ghannam, Mohamed Y. E. Selim, Abdulrazag Y. Zekri, Nabil Esmail
Summary: This study investigated the viscoelastic behavior of crude oil-Xanthan gum emulsions through Creep-recovery examinations. The experimental measurements and analysis showed that the linear viscoelastic range of the emulsions was up to 1 Pa, and the compliance decreased with higher concentrations.
Article
Chemistry, Physical
Mathieu Balcaen, Johan Steyls, Arnulf Schoeppe, Veronique Nelis, Paul Van der Meeren
Summary: The study revealed that the composition of oil phase and phospholipids can influence the characteristics of w/o emulsions and w/o/w emulsions. Additionally, the hydrophilic emulsifier was found to have an impact on the properties of w/o/w emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Min Zhang, Wanli Kang, Hongbin Yang, Bobo Zhou, Zhe Li, Yingqi He, Korobov Grigory Yurievich, Lekomtsev Alexander Viktorovich
Summary: By using environmentally friendly beta-cyclodextrin as a reverse demulsifier, the dewatering rate of O/W emulsion could be effectively increased. The host-guest inclusion interaction was found to disassemble the network structure of APP4, leading to a significant decrease in structural viscosity and promoting rapid growth of the droplets.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
E. P. Marin Castano, Paulo R. de Souza Mendes
Summary: Emulsions can be classified as colloidal systems, and the transition threshold between different phases can be observed from both thermodynamic and rheological perspectives. Liquid phases exhibit Newtonian behavior, while liquid-solid and solid-like phases demonstrate non-Newtonian rheological behavior.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Mira Abou Dib, Marie Lemarchand, Ecaterina Gore, Michel Grisel
Summary: The emulsification properties of hydrophobically modified xanthan (HMX) obtained through green esterification using alkenyl succinic anhydrides (ASA) as grafting agents were investigated. The study found that the new-brand bio-sourced HMX showed better emulsifying potential compared to pristine xanthan. The stability of the emulsions was studied at different levels and it was found that increasing grafting density or hydrophobic chain length improved the stability of the emulsions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Hongbin Yang, Zhiqi Lv, Min Zhang, Jiatong Jiang, Bin Xu, Jingjing Shen, Haizhuang Jiang, Wanli Kang
Summary: Amphiphilic polymer PMC16 is capable of emulsifying crude oil, reducing oil viscosity, and altering wettability, thereby enhancing the recovery of heavy oil.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Xiangfeng Zhang, Bauyrzhan Sarsenbekuly, Hongbin Yang, Lushan Wang, Yanbin Cao, Peng Xu, Shubin Shi, Peizhong Tang, Xue Wei, Wanli Kang
Summary: Amphiphilic polymers can form and stabilize oil-water emulsions with crude oil due to the presence of hydrophobic groups. The supramolecular system formed by electrostatic interaction between amphiphilic polymers and polybasic acid affects the stability of the emulsion. The study investigates the effect of polybasic acid structure on the emulsion stability and the emulsification law of supramolecular crude oil system.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Applied
Zhaohua Huang, Baozhong Guo, Chong Deng, Can Tang, Chengmei Liu, Xiuting Hu
Summary: W/O/W emulsions were successfully prepared using rice bran wax (RBX) for oil phase oleogelation, showing improved stability and increased average particle size and viscosity with higher RBX concentrations. The RBX also enhanced the protection and bioaccessibility of proanthocyanidins and beta-carotene, with optimum results achieved at RBX concentrations of 8.0% or 10.0%.
Article
Biochemistry & Molecular Biology
Mahmood M. S. Abdullah, Abdelrahman O. Ezzat, Hamad A. Al-Lohedan, Ali Aldalbahi, Ayman M. Atta
Summary: This study focuses on the synthesis of two new amphiphilic ionic liquids (AILs) using abietic acid (AA) as a precursor and their application as efficient demulsifiers for water-in-crude oil (W/O) emulsions. The AILs showed promising results in demulsifying W/O emulsions in different crude oil: brine ratios.
Article
Energy & Fuels
Kaiping Tian, Wanfen Pu, Qianlong Wang, Siying Li, Shun Liu, Mengke Xie, Yibo Wang
Summary: To tackle the issue of oil shortage, the use of nanoparticles to enhance the emulsification effect of surfactants and improve oil recovery was proposed. The synthesis of amphiphilic nano-calcium carbonate (ANCC) was carried out, and its dispersion effect in saponin solution was studied. The results showed that the dispersion effect of ANCC was optimal in a saponin solution with a concentration of 5000 ppm, and the dispersion rate decreased with increasing salinity. The effects of ANCC on emulsion properties, interfacial tension, and expansion modulus of saponin solution were also investigated. It was found that higher ANCC concentration led to increased emulsion rate, decreased water extraction rate, reduced emulsion particle size, lowered interfacial tension, increased expansion modulus, and improved emulsion stability. Temperature and salinity were also found to influence the interfacial tension and expansion modulus. Finally, displacement experiments showed increased oil recovery with higher ANCC concentration, highlighting the significance of this work in enhanced oil recovery through surfactant flooding.
