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Zhang Z, Song Q, Zhao Z, Chang K, Shu P, Wang J, Yan H, Zhang Y. Cosmetically Approved Short-Chain Alcohol/Triethyl Citrate/Water Surfactant-Free Microemulsions and Potential Application to Transdermal Penetration of α-Arbutin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11011-11022. [PMID: 38739267 DOI: 10.1021/acs.langmuir.4c00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Surfactant-free microemulsions (SFMEs) exhibited remarkable advantages and potential, attributed to their similarity to traditional surfactant-based microemulsions and the absence of surfactants. Herein, a novel SFME was developed utilizing cosmetically approved materials, such as short-chain alcohol as an amphi-solvent, triethyl citrate (TEC) as the nonpolar phase, and water as the polar phase. 1,2-Pentanediol (PtDO)/TEC/water combination can form the largest monophasic zone, accounting for ∼74% of the total phase diagram area, due to an optimal hydrophilic (water)-lipophilic (TEC) balance. Comparable to surfactant-based microemulsion, PtDO/TEC/water SFME can also be categorized into three types: water-in-oil, discontinuous, and oil-in-water. As TEC or water is increased, or PtDO is decreased, the nanoaggregates in PtDO/TEC/water SFME grow from <5 nm to tens of nanometers. The addition of α-arbutin (ABN) does not disrupt PtDO/TEC/water SFME, but rather enhances its formation, resulting in a larger monophasic area and consistent size (2.8-3.8 nm) through participating in interface assembly. Furthermore, ABN-loaded PtDO/TEC/water SFME exhibits remarkable resistance to dilution, exceptional stability, and minimal irritation. Notably, PtDO/TEC/water SFME significantly boosts ABN's solubility in water by 2 times, its percutaneous penetration rate by 3-4 times, and enables a slow-release DPPH• radical scavenging effect. This SFME serves as a safe and cosmetically suitable nanoplatform for the delivery of bioactive substances.
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Affiliation(s)
- Zhiqin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
| | - Qingle Song
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
- HBN Research Institute and Biological Laboratory, Shenzhen Hujia Technology Co., Ltd., Shenzhen 518000, China
| | - Zhen Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Kuan Chang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
| | - Peng Shu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
- HBN Research Institute and Biological Laboratory, Shenzhen Hujia Technology Co., Ltd., Shenzhen 518000, China
| | - Jing Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
| | - Hui Yan
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yongmin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, JNU-HBN Cosmetic Functional Molecular Innovation Joint Laboratory, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, China
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Liu L, Zhang M, Lu Y, Chen G, Lu B, Ge L, Lu Z, Sun D, Xu Z. Microstructure-dependent CO 2-responsive microemulsions for deep-cleaning of oil-contaminated soils. CHEMOSPHERE 2024; 350:140928. [PMID: 38092174 DOI: 10.1016/j.chemosphere.2023.140928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/04/2023] [Accepted: 12/07/2023] [Indexed: 12/30/2023]
Abstract
CO2-responsive microemulsion (ME) is considered a promising candidate for deep-cleaning and oil recovery from oil-contaminated soils. Understanding the responsive nature of different microstructures (i.e., oil-in-water (O/W), bicontinuous (B.C.) and water-in-oil (W/O)) is essential for unlocking the potential and mechanisms of CO2-responsive emulsions in complex multiphase systems and providing comprehensive guidance for remediation of oil-contaminated soils. Herein, the responsiveness of microstructures of ME to CO2 trigger was investigated using experimental designs and coarse-grained molecular dynamic simulations. MEs were formed for the first time by a weakly associated pseudo-Gemini surfactant of indigenous organic acids (naphthenic acids, NAs are a class of natural surface-active molecules in crude oil) and tetraethylenepentamine (TEPA) through fine tuning of co-solvent of dodecyl benzene sulfonic acid (DBSA) and butanol. The O/W ME exhibited an optimal CO2-responsive character due to easier proton migration in the continuous aqueous phase and more pronounced dependence of configuration on deprotonated NA ions. Conversely, the ME with W/O microstructure exhibited a weak to none responsive characteristic, most likely attributed to its high viscosity and strong oil-NA interactions. The O/W ME also showed superior cleaning efficiency and oil recovery from oil-contaminated soils. The results from this study provide insights for the design of CO2-responsive MEs with desired performance and guidance for choosing the favorable operating conditions in various industrial applications, such as oily solid waste treatment, enhanced oil recovery (EOR), and pipeline transportation. The insights from this work allow more efficient and tailored design of switchable MEs for manufacturing advanced responsive materials in various industrial sectors and formulation of household products.
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Affiliation(s)
- Lingfei Liu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Mingshan Zhang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Yi Lu
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Gaojian Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Binda Lu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Lingling Ge
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Zhouguang Lu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong, 250100, China
| | - Zhenghe Xu
- Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China.
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Anjali, Pandey S. Formation of Ethanolamine-Mediated Surfactant-Free Microemulsions Using Hydrophobic Deep Eutectic Solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2254-2267. [PMID: 38232323 DOI: 10.1021/acs.langmuir.3c03324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Hydrophobic deep eutectic solvents (HDESs) are emerging as versatile, relatively benign, and inexpensive alternatives to conventional organic solvents in a diverse set of applications. In this context, the formation of microemulsions with HDES replacing the oil phase has become an area of active exploration. Because of recent reports on the undesirable toxicity of many common surfactants, efforts are under way to investigate the formation of surfactant-free microemulsions (SFMEs) using HDES as an oil phase. We present SFME formation using HDESs constituted of n-decanoic acid and five (5) structurally different terpenoids [thymol, l(-)-menthol, linalool, β-citronellol, and geraniol] at a 1:1 molar ratio as the oil phase and water as the hydrophilic phase. Ethanolamine (ETA) exhibited the best potential as a hydrotrope among several other similar small molecules. Results showed a drastic increase in water solubility within the HDESs in the presence of ETA. ETA exerted its hydrotropic action at different extent for each DES system via chemical interaction with the H-bond donor (HBD) constituent of the HDES. The optimum hydrotropic concentration (minimum hydrotrope and maximum water retention, XETAOPT) assigned for each DES/ETA/water system and water loading are reported, and the trends are discussed in detail. Ternary phase diagrams are constructed using visual observation and the dye staining method. The area under the single- and multiple-phase regions (assigned in ternary phase diagrams) was estimated. "Pre-Ouzo" enforced by ETA was investigated using dynamic light scattering (DLS) of the DES/ETA/water systems at XETAOPT. A systematic growth in nanoaggregates was observed with the subsequent addition of water in DES/ETA systems while continuously changing the existing microstructure. The presence of a core (oil)-shell (water)-like structure as indicated by the fluorescence response of Nile red in the "pre-Ouzo" region is speculated. We were able to prepare a homogeneous solution of [K3Fe(CN)6] salt in "pre-Ouzo" mixtures with no apparent deviation in the Beer-Lambert law.
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Affiliation(s)
- Anjali
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110016, India
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Li M, Wakata Y, Zeng H, Sun C. On the thermal response of multiscale nanodomains formed in trans-anethol/ethanol/water surfactant-free microemulsion. J Colloid Interface Sci 2023; 652:1944-1953. [PMID: 37690302 DOI: 10.1016/j.jcis.2023.08.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/12/2023]
Abstract
HYPOTHESIS Surfactant-free microemulsion (SFME), an emerging phenomenology that occurs in the monophasic zone of a broad category of ternary mixtures 'hydrophobe/hydrotrope/water', has attracted extensive interests due to their unique physicochemical properties. The potential of this kind of ternary fluid for solubilization and drug delivery make them promising candidates in many industrial scenarios. EXPERIMENTS Here the thermodynamic behavior of these multiscale nanodomains formed in the ternary trans-anethol/ethanol/water system over a wide range of temperatures is explored. The macroscopic physical properties of the ternary solutions are characterized, with revealing the temperature dependence of refractive index and dynamic viscosity. FINDINGS With increasing temperature, the ternary system shows extended areas in the monophasic zone. We demonstrate that the phase behavior and the multiscale nanodomains formed in the monophasic zone can be precisely and reversibly tuned by altering the temperature. Increasing temperature can destroy the stability of the multiscale nanodomains in equilibrium, with an exponential decay in the scattering light intensity. Nevertheless, molecular-scale aggregates and mesoscopic droplets exhibit significantly different response behaviors to temperature stimuli. The temperature-sensitive nature of the ternary SFME system provides a crucial step forward exploring and industrializing its stability.
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Affiliation(s)
- Mingbo Li
- Center for Combustion Energy, Key laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China.
| | - Yuki Wakata
- Center for Combustion Energy, Key laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
| | - Hao Zeng
- Center for Combustion Energy, Key laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
| | - Chao Sun
- Center for Combustion Energy, Key laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China; Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China.
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Jing J, Qi J, Yang Y, Yue W, Wang N, Li X, Lu H. Multiple-Stimuli-Responsive Surfactant-Free Microemulsions Based on Hydrophobic Deep Eutectic Solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6730-6739. [PMID: 37133283 DOI: 10.1021/acs.langmuir.3c00205] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hydrophobic deep eutectic solvents (HDESs) have been applied to colloidal systems such as microemulsions, despite the development of stimulus-responsive HDESs still being in a preliminary stage. Here, menthol and indole were hydrogen bonded to form CO2-responsiveness HDES. A surfactant-free microemulsion constituted of HDES (menthol-indole) as the hydrophobic phase, water as the hydrophilic phase, and ethanol as the double solvent was demonstrated to be CO2- and temperature-responsive. Dynamic light scattering (DLS) proved the single-phase region of the phase diagram, while conductivity and polarity probing techniques confirmed the kind of microemulsion. The ternary phase diagram and DLS methods were used to investigate the responsiveness of CO2 and effect temperature on the microemulsion drop size and behavior of the phase of the HDES/water/ethanol microemulsion. The findings revealed that when temperature increased, the homogeneous phase region increased. The droplet size in the homogeneous phase region of the associated microemulsion may be reversibly and accurately adjusted by adjusting the temperature. Surprisingly, a slight temperature change can cause a significant phase inversion. Furthermore, in the system, there was no demulsification in time for the CO2/N2 responsiveness process but rather the production of a homogeneous and pellucid aqueous solution.
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Affiliation(s)
- Junhao Jing
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Jie Qi
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Yang Yang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Wenjian Yue
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Na Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
| | - Xiaojiang Li
- Chongqing University of Science & Technology, Chongqing, 401331 Chongqing, China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
- Engineering Research Center of Oilfield Chemistry, Ministry of Education, Chengdu 610500, P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, P. R. China
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Wu Y, Jing J, Li X, Yue W, Qi J, Wang N, Lu H. CO 2-Responsive Hydrophobic Deep Eutectic Solvent Based on Surfactant-Free Microemulsion-Mediated Synthesis of BaF 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1181-1189. [PMID: 36633940 DOI: 10.1021/acs.langmuir.2c02991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A new form of surfactant-free microemulsion (SFME) including hydrophobic deep eutectic solvent (HDES)/ethanol/water was constructed based on its CO2 response, and three regions, that is, HDES-in-water (HDES/W), bicontinuous (B.C.), and water-in-HDES (W/HDES) regions, were recognized. It is anticipated that SFMEs with tunable microstructures have outstanding applications as nanoreactors in reaction processes. The feasibility of preparing nanoparticles from HDES/ethanol/water SFME using barium fluoride (BaF2) as a model nanoparticle was investigated. HDES-based microemulsions benefit from HDES's excellent properties (novel, low toxicity, CO2-responsive, easy availability) and have potential in universal reactions, drug delivery, advanced material fabrication, etc. In this research, HDES-based microemulsions were prepared using HDES as the oil phase. Phase equilibria and microstructure were investigated using a ternary phase diagram, UV spectrophotometry, and the conductivity method. The CO2 switchable characteristics of the HDES-based microemulsions were investigated. HDES-based microemulsions were proposed as nanoreactors for the synthesis of barium fluoride nanomaterials. The microemulsion structure can modulate the size, morphology, and physicochemical properties of the nanoparticles through the CO2 switchable properties. It is argued that nanoreactors constructed with versatile HDES will offer a new direction for creation of cutting-edge scientific applications.
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Affiliation(s)
- Yang Wu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Junhao Jing
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Xiaojiang Li
- Chongqing University of Science & Technology, Chongqing, Chongqing401331, China
| | - Wenjian Yue
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Jie Qi
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Na Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu610500, PR China
- Engineering Research Center of Oilfield Chemistry, Ministry of Education, Chengdu610500, PR China
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Liu Z, Shi A, Wu C, Hei X, Li S, Liu H, Jiao B, Adhikari B, Wang Q. Natural Amphiphilic Shellac Nanoparticle-Stabilized Novel Pickering Emulsions with Droplets and Bi-continuous Structures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:57350-57361. [PMID: 36516347 DOI: 10.1021/acsami.2c16860] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Shellac is a natural amphiphilic substance, and its nanoparticles can be used to stabilize Pickering emulsions with droplets and bi-continuous structures. In this study, shellac nanoparticles (SNPs) were produced through the anti-solvent method, and these SNPs were used to produce a series of Pickering emulsions. Fourier transform infrared results showed that SNPs were generated through hydrogen bonding and hydrophobic effects. The contact angle of SNPs was 122.3°, indicating that hydrophobicity was their dominant characteristic. According to the results of confocal laser scanning microscopy, the Pickering emulsions stabilized by SNPs showed oil-in-water, bi-continuous structure, and water-in-oil characteristics, which were dependent on the oil-phase content. The resistance value of the emulsified part of these Pickering emulsion systems significantly increased at an oil-phase ratio of 80-90% (more than 105 MΩ), as compared with the 10-70% oil-phase content (around 1 MΩ). The viscosity of SNP-stabilized Pickering emulsions with bi-continuous structures was highest at 40% oil-phase content. The porous material prepared by using Pickering emulsions with bi-continuous structures as a template had an interconnected structure and was able to absorb both water and oil. This study indicated that these amphiphilic SNPs readily form bi-continuous structures and effectively stabilize Pickering emulsions with droplets. These SNPs are expected to have increased application in food and pharmaceutical industries.
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Affiliation(s)
- Zhe Liu
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Aimin Shi
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Chao Wu
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Xue Hei
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Shanshan Li
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Hongzhi Liu
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Bo Jiao
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
| | - Benu Adhikari
- School of Science, RMIT University, Melbourne3083, Victoria, Australia
| | - Qiang Wang
- Institute of Food Science and Technology, Key Laboratory of Agro-Products Processing, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing100193, China
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Li M, Yi L, Sun C. Spontaneously formed multiscale nano-domains in monophasic region of ternary solution. J Colloid Interface Sci 2022; 628:223-235. [DOI: 10.1016/j.jcis.2022.07.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 10/16/2022]
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Song X, Wang J, Li S, Wang Y. Formation of sacha inchi oil microemulsion systems: effects of non-ionic surfactants, short-chain alcohols, straight-chain esters and essential oils. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3572-3580. [PMID: 34862969 DOI: 10.1002/jsfa.11703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/25/2021] [Accepted: 12/04/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND This study reports the formation of sacha inchi oil (SIO) microemulsions for food and cosmetic applications. Effects of non-ionic surfactants, short-chain alcohols, essential oil and straight-chain esters on the phase behavior and formulation of U-type microemulsion were investigated. Pseudo ternary phase diagrams were constructed to assess the influence of these factors using water titration method. Structural transitions were measured along several water dilution lines using conductivity and viscosity tools. RESULTS Among four different surfactants, Tween 80 solubilized the maximum oil and induced the formation of a U-type microemulsion system. Oil solubilization was decreased in the presence of short-chain alcohols. In addition, the system containing straight-chain esters as the cosolvent showed a higher expansion effect in the U-type areas than that containing essential oils. Finally, upon water dilution of three systems with SIO/ethyl acetate of 1:1, 1:2 and 1:3, microstructural transition from W/O to bicontinuous occurred at 200 g kg-1 (w/w) water content, and then to O/W structure at 650 g kg-1 (w/w) water content. CONCLUSION Straight-chain esters as cosolvent is a potential strategy to extend the dilutability of SIO microemulsions. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Xiaoqiu Song
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Jinyu Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Shuaitao Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Yifei Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
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Panoutsopoulou E, Zbytovská J, Vávrová K, Paraskevopoulos G. Phospholipid-Based Microemulsions for Cutaneous Imiquimod Delivery. Pharmaceuticals (Basel) 2022; 15:ph15050515. [PMID: 35631342 PMCID: PMC9147306 DOI: 10.3390/ph15050515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 12/07/2022] Open
Abstract
Imiquimod (IMQ) is a potent immune response modifier with antiviral and antitumor properties. IMQ’s low aqueous solubility and unsatisfactory cutaneous permeability limit its formulation into effective dosage forms. This work aimed to develop IMQ-loaded microemulsions (MEs) based on phospholipids and oleic acid to improve IMQ penetration into the epidermis. A pseudo-ternary phase diagram was constructed, and the microstructure of the formulations was examined by measuring the conductivity values. Selected MEs were characterized and studied for their ability to deliver IMQ into and through ex vivo human skin. ME1 with 1% IMQ (bicontinuous ME with Bingham rheology) delivered similar IMQ quantities to the human epidermis ex vivo as the commercial product while having a 5-fold lower IMQ dose. IMQ was not detected in the acceptor phase after the permeation experiment, suggesting a lower systemic absorption risk than the established product. Infrared spectroscopy of the stratum corneum revealed less ordered and less tightly packed lipids after ME1 application. The ME1-induced barrier disruption recovered within less than 5 h after the formulation removal, as detected by transepidermal water loss measurements. In conclusion, our findings demonstrate that phospholipid and oleic acid-based MEs could become a promising alternative for topical IMQ administration.
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Affiliation(s)
- Eleni Panoutsopoulou
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
| | - Jarmila Zbytovská
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
- Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic
| | - Kateřina Vávrová
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
| | - Georgios Paraskevopoulos
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
- Correspondence:
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Chen J, Huang Z, Liu D, Zhang Y, Li H, Lu H. Wettability reversal of reservoir rock surface through surfactant stabilized microemulsion. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12586] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jun Chen
- College of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu P. R. China
| | - Zhiyu Huang
- School of New Energy and Materials Southwest Petroleum University Chengdu P. R. China
| | - Dongfang Liu
- Department of Chemistry, School of Science Xihua University Chengdu P. R. China
| | - Ying Zhang
- College of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu P. R. China
| | - Hanmin Li
- College of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu P. R. China
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12
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The key to surfactant-free microemulsion demulsification: CO2 promotes the transfer of amphiphilic solvent to aqueous phase. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Kong J, Li L, Zeng Q, Long J, He H, Wang Y, Liu S, Li X. Production of 4-Ethylphenol from Lignin Depolymerization in a Novel Surfactant-Free Microemulsion Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jinxing Long
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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14
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Manyala DL, Varade D. Formation and characterization of microemulsion with novel anionic sodium N-lauroylsarcosinate for personal care. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Sadat Mirhoseini B, Salabat A. A novel surfactant-free microemulsion system for the synthesis of poly(methyl methacrylate)/Ag nanocomposite. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Xu J, Cui Y, Wang R, Shi Z, Wu C, Li D. Mesoporous La-based nanorods synthesized from a novel IL-SFME for phosphate removal in aquatic systems. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Solubilization, stability and antioxidant activity of curcumin in a novel surfactant-free microemulsion system. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111583] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Gradzielski M, Duvail M, de Molina PM, Simon M, Talmon Y, Zemb T. Using Microemulsions: Formulation Based on Knowledge of Their Mesostructure. Chem Rev 2021; 121:5671-5740. [PMID: 33955731 DOI: 10.1021/acs.chemrev.0c00812] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Microemulsions, as thermodynamically stable mixtures of oil, water, and surfactant, are known and have been studied for more than 70 years. However, even today there are still quite a number of unclear aspects, and more recent research work has modified and extended our picture. This review gives a short overview of how the understanding of microemulsions has developed, the current view on their properties and structural features, and in particular, how they are related to applications. We also discuss more recent developments regarding nonclassical microemulsions such as surfactant-free (ultraflexible) microemulsions or ones containing uncommon solvents or amphiphiles (like antagonistic salts). These new findings challenge to some extent our previous understanding of microemulsions, which therefore has to be extended to look at the different types of microemulsions in a unified way. In particular, the flexibility of the amphiphilic film is the key property to classify different microemulsion types and their properties in this review. Such a classification of microemulsions requires a thorough determination of their structural properties, and therefore, the experimental methods to determine microemulsion structure and dynamics are reviewed briefly, with a particular emphasis on recent developments in the field of direct imaging by means of electron microscopy. Based on this classification of microemulsions, we then discuss their applications, where the application demands have to be met by the properties of the microemulsion, which in turn are controlled by the flexibility of their amphiphilic interface. Another frequently important aspect for applications is the control of the rheological properties. Normally, microemulsions are low viscous and therefore enhancing viscosity has to be achieved by either having high concentrations (often not wished for) or additives, which do not significantly interfere with the microemulsion. Accordingly, this review gives a comprehensive account of the properties of microemulsions, including most recent developments and bringing them together from a united viewpoint, with an emphasis on how this affects the way of formulating microemulsions for a given application with desired properties.
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Affiliation(s)
- Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany
| | - Magali Duvail
- ICSM, Université Montpellier, CEA, CNRS, ENSCM, 30207 Marcoule, France
| | - Paula Malo de Molina
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain.,IKERBASQUE - Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany.,Department of Chemical Engineering and the Russell Berrie Nanotechnolgy Inst. (RBNI), Technion-Israel Institute of Technology, Haifa, IL-3200003, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering and the Russell Berrie Nanotechnolgy Inst. (RBNI), Technion-Israel Institute of Technology, Haifa, IL-3200003, Israel
| | - Thomas Zemb
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany.,ICSM, Université Montpellier, CEA, CNRS, ENSCM, 30207 Marcoule, France
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19
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Fan T, Chen L, Xia X, Wu Y, Zhang J, Yin K, Liu F, Yan Z. Dissipative Particle Dynamics Quantitative Simulation of the Formation Mechanism and Emulsification Driving Force of Deep Eutectic Solvent-Based Surfactant-Free and Water-Free Microemulsion. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c06193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Taotao Fan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaomeng Xia
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yuehang Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianwei Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - KangLing Yin
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zongcheng Yan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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20
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Kong J, Li L, Zeng Q, Cai Z, Wang Y, He H, Liu S, Li X. Oxidation of organosolv lignin in a novel surfactant-free microemulsion reactor. BIORESOURCE TECHNOLOGY 2021; 321:124466. [PMID: 33321297 DOI: 10.1016/j.biortech.2020.124466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Lignin is considered as a promising substitute for fossil resources, but its efficient conversion remains a huge challenge due to the structural complexity and immiscibility with typical solvents. Herein, a series of surfactant-free microemulsion reactors comprised of n-octane, water and n-propanol were designed and their corresponding phase behaviors alongside their ability to intensify oxidative depolymerization of lignin were explored. Experimental results show that the phenolic monomer yield improves substantially (40-500 wt%) by comparison with processes performed in a single solvent. Detailed characterizations also suggest that the above intensification is rationalized by the solubilization effect of microemulsion system and directional aggregation of lignin at the microemulsion interface.
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Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhenping Cai
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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21
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Zhang Y, Liu D, Wang B, Lu H, Huang Z. Reversible temperature regulation of CO2-responsive ionic liquid microemulsion. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Zhang Y, Chen X, Zhu B, Zhou Y, Liu X, Yang C. Temperature-Switchable Surfactant-Free Microemulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7356-7364. [PMID: 32527085 DOI: 10.1021/acs.langmuir.0c00828] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Stimuli-responsive microemulsions have recently attracted significant interest due to their unique properties. Here, we developed a novel surfactant-free microemulsion (SFME) in a nontoxic ternary mixture, in which dimethyl sulfoxide (DMSO) was used as an amphisolvent, n-butanol was used as a nonpolar phase, and water was used as a polar phase. The DLS results confirmed the presence of the preouzo zone, and the polarity experiment revealed that the single-phase region can be further divided into oil-in-water, bicontinuous, and water-in-oil subregions. The size of droplets increased upon increasing the water or n-butanol content but decreased with increasing DMSO content. With increasing temperature, the area of the single-phase region increased, accompanied by a decrease in the size of the droplets, and the critical point moved to the corner of n-butanol. No matter in what subregion the formulation was found, decreasing temperature to below the phase-transition temperature (PTT) will induce a transition from monophasic MEs to complete phase separation and vice versa. This is mainly attributed to the effect of temperature on the hydrogen-bond interaction. Ag nanoparticles (Ag NPs) can be prepared above the PTT and facilely separated below PTT. The Ag NPs obtained from the current SFME showed higher catalytic activity than that obtained from a common surfactant-based ME.
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Affiliation(s)
- Yongmin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xuelian Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Bo Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yue Zhou
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xuefeng Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Cheng Yang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China
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23
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Zhu S, Li J, Liu Y, Chen L. Formation and stability of Eucommia ulmoides Oliver seed oil-loaded inverse microemulsion formed by food-grade ingredients and its antioxidant activities. J Food Sci 2020; 85:1489-1499. [PMID: 32282076 DOI: 10.1111/1750-3841.15103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/02/2020] [Accepted: 02/13/2020] [Indexed: 11/26/2022]
Abstract
Eucommia ulmoides Oliver seed oil (E.u oil) as a functional oil is rich in many natural active components such as α-linolenic acid (56% to 63%), vitamin E, aucubin, and so on. In this study, water-in-oil (W/O) microemulsions composed of Eucommia ulmoides Oliver seed oil, distilled water, a blend of Sorbitan monooleate 80 (Span 80) and Polysorbate (20) sorbitan monooleate (Tween 80), and propylene glycol were prepared for improving the compatibility of Eucommia ulmoides Oliver seed oil. Pseudoternary phase diagrams were built to illustrate the phase behavior of the microemulsions, based on hydrophilic-lipophilic balance values, cosurfactant type, the proportion of cosurfactant, and the changing environmental stress. Dynamic light scattering, transmission electron microscopy, and electrical conductivity measurements were performed to characterize the microstructural aspects. The optimum process conditions at which the Eucommia ulmoides Oliver seed oil-loaded microemulsion had good tolerance to pH and salinity were: Propylene glycol served as cosurfactant, water-Propylene glycol, and Span 80-Tween 80 ratios separately kept constant at 1:1 and 6:4. These microemulsions with narrow size distribution, nanoscale particle size (below 60 nm), transparent appearance had a wide range of oil phase content and free-radical scavenging capacity toward DPPH and ABTS radicals with half-maximal inhibitory concentration (IC50 ) values of 49.20 and 33.43 mg/mL, respectively. PRACTICAL APPLICATION: This nanostructure, environmental stability, and antioxidant activity of microemulsions containing Eucommia ulmoides Oliver seed oil is a potential delivery system as an alternative to α-linolenic acid and can be used for the delivery of peptides, proteins, antioxidants, and water-soluble nutrients.
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Affiliation(s)
- Shiye Zhu
- National & Local United Engineering Laboratory of Integrative Utilization Technology of Eucommiaulmoides, Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie, 427000, PR China
| | - Jiaxing Li
- National & Local United Engineering Laboratory of Integrative Utilization Technology of Eucommiaulmoides, Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie, 427000, PR China.,Institute of Food Science, Jishou University, Jishou, 416000, PR China
| | - Yating Liu
- Institute of Food Science, Jishou University, Jishou, 416000, PR China
| | - Liang Chen
- National & Local United Engineering Laboratory of Integrative Utilization Technology of Eucommiaulmoides, Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie, 427000, PR China
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24
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Song M, Liu W, Wang Q, Wang J, Chai J. A surfactant-free microemulsion containing diethyl malonate, ethanol, and water: Microstructure, micropolarity and solubilizations. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.11.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Miao S, Atkin R, Warr GG. Amphiphilic nanostructure in choline carboxylate and amino acid ionic liquids and solutions. Phys Chem Chem Phys 2020; 22:3490-3498. [PMID: 31990285 DOI: 10.1039/c9cp06752c] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The liquid structures of six choline carboxylate/amino acid ionic liquids (bio-ILs) and their mixtures with water and various n-alkanols have been investigated by small-angle X-ray scattering (SAXS). The ILs exhibit long-range amphiphilic nanostructure comprised of polar and apolar domains that can be controlled by choice of anion, and which is tolerant to water dilution. Mixtures with n-alkanols can lead to marked changes in domain size and ordering. Utilising the Teubner-Strey model, we find amphiphilicity factors in many of these mixtures are comparable to those observed in conventional microemulsions, and that cooperative assembly in bio-IL/alkanol mixtures can enhance amphiphilicity, with potential to improve performance in a range of applications.
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Affiliation(s)
- Shurui Miao
- School of Chemistry and University of Sydney Nano Institute, The University of Sydney, NSW 2006, Australia.
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, WA 6009, Australia
| | - Gregory G Warr
- School of Chemistry and University of Sydney Nano Institute, The University of Sydney, NSW 2006, Australia.
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26
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Zhang X, Song M, Chai J, Cui X, Wang J. Preparation, characterization and application of a surfactant-free microemulsion containing 1-octen-3-ol, ethanol, and water. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112278] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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27
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Vicentino PO, Cassella RJ, Leite D, Resano M. Extraction induced by microemulsion breaking as a novel tool for the simultaneous determination of Cd, Mn, Pb and Sb in gasoline samples by ICP-MS and discrete sample introduction. Talanta 2019; 206:120230. [PMID: 31514849 DOI: 10.1016/j.talanta.2019.120230] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/08/2019] [Accepted: 08/04/2019] [Indexed: 02/07/2023]
Abstract
This study reports a simple and efficient method for the simultaneous determination of Cd, Mn, Pb, and Sb at trace levels in gasoline samples by discrete sample introduction in inductively coupled plasma mass spectrometry (ICP-MS), employing the extraction induced by microemulsion breaking as a sample preparation method. In this work, a microemulsion was formed by mixing 0.7 mL of the gasoline sample with 0.28 mL of ethanol and 0.02 mL of 7 mol L-1 HNO3 solution. Afterwards, 0.1 mL of ultrapure water was added to induce microemulsion breaking. This lead to the formation of two different phases: (i) a top organic phase and (ii) a bottom aqueous phase that contained acid, ethanol and the extracted analytes. After that, 20 μL of the bottom phase (extract) was collected, and the analyte concentrations were determined by discrete sample introduction in ICP-MS. Calibration curves with 20 μg L-1 of Rh as an internal standard were set up to each analyte in the range from 1 up to 10 μg L-1, wherein the standard solutions were prepared in the matrix-matched extract (70:25:5, ethanol: deionized water: 7 mol L-1 HNO3 solution). The optimization of the EIMB conditions was carried out by analyzing the effects of the parameters that could affect the extraction efficiency, such as the relation between the nature of the alcohol and the proportion of the volumes of the microemulsion constituents (sample, HNO3 and alcohol), acid concentration, and the water volume used for the microemulsion breaking. The following limits of detection relative to the amount of sample were obtained: 0.03 (Cd), 0.49 (Mn), 0.07 (Pb) and 0.02 (Sb), all of them in μg L-1. The accuracy of the method was evaluated by the analysis of spiked samples, because no certified gasoline reference material is available. The average recoveries achieved for every analyte ranged from 96% to 114%. The developed methodology was successfully applied to the determination of these metals in five commercial gasoline samples.
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Affiliation(s)
- Priscila O Vicentino
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói/RJ, 24020-141, Brazil; Department of Analytical Chemistry, University of Zaragoza, Aragón Institute of Engineering Research (I3A), Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Ricardo J Cassella
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói/RJ, 24020-141, Brazil.
| | - Diego Leite
- Department of Analytical Chemistry, University of Zaragoza, Aragón Institute of Engineering Research (I3A), Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Martín Resano
- Department of Analytical Chemistry, University of Zaragoza, Aragón Institute of Engineering Research (I3A), Pedro Cerbuna 12, 50009, Zaragoza, Spain
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28
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Cui X, Wang J, Zhang X, Wang Q, Song M, Chai J. Preparation of Nano-TiO 2 by a Surfactant-Free Microemulsion-Hydrothermal Method and Its Photocatalytic Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9255-9263. [PMID: 31264427 DOI: 10.1021/acs.langmuir.9b01392] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The TiO2 nanoparticles with high photocatalytic activity were prepared by the surfactant-free microemulsion (SFME)-hydrothermal method at lower temperatures using oil-in-water SFME systems as templates. The phase diagram of the SFME ethyl acetate (EA)/propan-2-ol/water was determined by electrical conductivity and UV-visible spectroscopy. The synthesized TiO2 nanoparticles were characterized by transmission electron microscopy, X-ray diffraction, and N2 adsorption-desorption techniques. They were all assigned to the anatase phase and showed type IV adsorption-desorption isotherms with type H2 hysteresis loops. As the EA content (fO) of the SFME decreases, the Brunauer-Emmett-Teller (BET) specific surface area (SBET) of the TiO2 nanoparticles increases. This results in an increase in the photocatalytic activity of the TiO2 nanoparticles. With an increase in temperature, the photocatalytic activity of the TiO2 nanoparticles increases significantly, whereas the SBET values decrease and the crystal size increases. Under the same conditions, the degradation rate of the TiO2 prepared at 190 °C reaches 97%, which is significantly higher than that of Degussa P-25 (66%). This may be due to the use of the SFME system to synthesize the TiO2 nanoparticles, which avoids the blocking effects of surfactant molecules on the active sites of the nanoparticles.
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Affiliation(s)
- Xiaocui Cui
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
| | - Jiao Wang
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
| | - Xiaoyu Zhang
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
| | - Qian Wang
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
| | - Miaomiao Song
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
| | - Jinling Chai
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , P. R. China
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29
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Guan X, Huang Z, Lu H, Sun D. Microheterogeneity and CO 2 Switchability of N, N-Dimethylcyclohexylamine-Water Binary Mixtures. J Phys Chem B 2019; 123:3096-3102. [PMID: 30883124 DOI: 10.1021/acs.jpcb.8b12060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Binary mixtures of water and organic solvents are described as the aqueous solutions of organic solvents, which are usually spatially heterogeneous on the scale of a few molecular sizes but homogeneous on longer length scales, that is, microheterogeneity. For the water-organic solvent binary mixtures with microheterogeneity, most organic solvents are miscible with water at any ratio. Interestingly, some slightly water-miscible organic solvents can also be used to prepare binary mixtures with microheterogeneity. In this study, N, N-dimethylcyclohexylamine (DMCHA) was used to prepare binary mixtures with microheterogeneity and CO2 switchability. With the help of conductivity, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and dynamic light scattering measurements, we found that water molecules are hydrogen-bonded together to form clusters over the water content range of 9 to 27 wt %, exhibiting microheterogeneity in the binary mixture. The size of the water clusters increases slightly with increasing water content. What is more, the DMCHA-water mixtures can be reversibly split into two phases by alternate bubbling of CO2 and N2, exhibiting excellent CO2 switchability. The binary mixtures can be used as reaction media for the synthesis of CaCO3 nanoparticles. Binary mixtures with microheterogeneity can also be formed under high salinity or high temperature conditions or be prepared using other slightly water-miscible organic solvents, opening up more interesting possibilities for binary mixtures with microheterogeneity.
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Affiliation(s)
- Xueqian Guan
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Zhiyu Huang
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan 250100 , P. R. China
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30
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Song X, Wang L, Li S, Ye L, Wang Y. Evaluation of phase behavior, microstructure transition and antiradical activity of lavender essential oil-based microemulsions. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2018.1515022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xiaoqiu Song
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Liping Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Shuaitao Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Lin Ye
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
| | - Yifei Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, PR China
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Xu D, Lu H, Liu D, Li X. CO2-switchable surfactant-free microemulsion consisted of N,N-dimethylcyclohexylamine, ethanol and water. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2018.1555482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Daixue Xu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, P. R. China
| | - Dongfang Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, P. R. China
| | - Xiaojiang Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, P. R. China
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Liu D, Lu H, Zhang Y, Zhu P, Huang Z. Conversion of a surfactant-based microemulsion to a surfactant-free microemulsion by CO 2. SOFT MATTER 2019; 15:462-469. [PMID: 30574987 DOI: 10.1039/c8sm02444h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A microemulsion with a CO2 response was prepared by mixing the surfactant sodium oleate (NaOA), the co-surfactant isopropyl alcohol (IPA), oil phase oleic acid (HOA) and water. This surfactant-based microemulsion (SBME) shows a CO2 responsive behavior, and the introduction of CO2 can breakdown the microemulsion. Through the research in this paper, it is found that the content of IPA has a direct impact on the CO2 response behavior of SBME. It was found that the lower the IPA content (22.73 wt%), the more obvious the CO2 response behavior of SBME. Conversely, when the concentration of IPA is high (54.05 wt% and 63.83 wt%), the introduction of CO2 does not directly lead to the demulsification of the microemulsion. NaOA can be converted to HOA under the action of CO2, which is why SBME shows CO2 response behavior. By comparing the effects of CO2 on the (pseudo-)ternary phase diagrams of SBME and surfactant-free microemulsion (SFME), we found evidence that SBME shows different CO2 response behaviors. When CO2 was bubbled into the SBME system with a low IPA content, IPA cannot stabilize the excessive HOA and water in the system and eventually break the microemulsion. The situation is different when CO2 is applied to the SBME system with a high IPA content. IPA as an amphiphilic solvent can stabilize the HOA and water in the system to form SFME. In this process, SBME can be demulsified (low IPA content) or can be converted to SFME (high IPA content) in the presence of CO2.
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Affiliation(s)
- Dongfang Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China. and Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, P. R. China
| | - Ying Zhang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Peiyao Zhu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Zhiyu Huang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China. and Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, P. R. China
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Sun B, Chai J, Chai Z, Zhang X, Cui X, Lu J. A surfactant-free microemulsion consisting of water, ethanol, and dichloromethane and its template effect for silica synthesis. J Colloid Interface Sci 2018; 526:9-17. [DOI: 10.1016/j.jcis.2018.04.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 04/12/2018] [Accepted: 04/17/2018] [Indexed: 02/06/2023]
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Liu D, Huang Z, Suo Y, Zhu P, Tan J, Lu H. CO 2-Responsive Surfactant-Free Microemulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8910-8916. [PMID: 29983070 DOI: 10.1021/acs.langmuir.8b01518] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A surfactant-free microemulsion (SFME) with CO2 stimuli responsive properties was prepared. The oil and the water phases were N, N-dimethylcyclohexylamine (DMCHA) and deionized water, respectively, and N, N-dimethylethanolamine was used as an amphisolvent. The single-phase and multiphase zones were measured by the ternary-phase diagram, and the microstructure of the SFME was determined by measuring the change trend of the electrical conductivity of the system with increasing DMCHA content. While using methyl orange as a probe, the microstructure of the SFME was further confirmed by an UV-visible spectrometer. The microstructures of water-in-oil (SFME-I) and oil-in-water (SFME-II) microemulsions were obtained by changing the DMCHA content in the system. The SFME-I system has a significant phase separation after the action of CO2. However, with the continuous introduction of CO2, the upper phase of DMCHA is gradually protonated and dissolves in the aqueous phase, resulting in a gradual decrease in the volume of the upper phase, and eventually in an aqueous solution of ammonium bicarbonate. For SFME-II, CO2 does not directly cause phase separation, but eventually it becomes an aqueous solution of ammonium bicarbonate with the addition of CO2. Both the water-in-oil structure SFME-I and the oil-in-water structure SFME-II have excellent CO2 stimuli responsive performance.
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Affiliation(s)
- Dongfang Liu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Zhiyu Huang
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Yuxin Suo
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Peiyao Zhu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Jiang Tan
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu 610500 , P. R. China
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Xu J, Song J, Deng H, Hou W. Surfactant-Free Microemulsions of 1-Butyl-3-methylimidazolium Hexafluorophosphate, Diethylammonium Formate, and Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7776-7783. [PMID: 29889531 DOI: 10.1021/acs.langmuir.8b00974] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surfactant-free microemulsions (SFMEs) are a unique kind of microemulsion, which form from immiscible fluids (i.e., oil and water phases) in the presence of amphi-solvents rather than traditional surfactants. In comparison with traditional surfactant-based microemulsions (SBMEs), SFMEs have received much less attention, and the current understanding of the unique system is very limited. Herein, we report a SFME consisting of the hydrophobic ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), the protic IL diethylammonium formate (DEAF), and water, in which the bmimPF6 and DEAF are used as the oil phase and amphi-solvent, respectively. Three kinds of microstructures, namely, water-in-bmimPF6 (W/IL), bicontinuous (BC), and bmimPF6-in-water (IL/W), are identified for the SFME, using cyclic voltammetry, cryo-TEM, and DLS techniques. Especially, the volumetric and surface free energy properties of the SFME are investigated by excess molar volume ( VmE) and surface tension (γ) measurements, and they are found to be similar to those of SBMEs. Discontinuous changes in VmE and γ with the system compositions are observed as the system microstructures change, which can be used to identify the structural transition of SFMEs. We think this study provides a better understanding of SFME features.
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Affiliation(s)
- Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Jiaxin Song
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Wanguo Hou
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education) , Shandong University , Jinan 250100 , P. R. China
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Liu Y, Xu J, Deng H, Song J, Hou W. A surfactant-free microemulsion composed of isopentyl acetate, n-propanol, and water. RSC Adv 2018; 8:1371-1377. [PMID: 35540868 PMCID: PMC9077043 DOI: 10.1039/c7ra12594a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/19/2017] [Indexed: 11/23/2022] Open
Abstract
It has been demonstrated that in the absence of traditional surfactants, microemulsions can form from a ternary mixture of oil, water, and an amphi-solvent. These microemulsions are called surfactant-free microemulsions (SFMEs). To date, only a small number of SFME systems have been reported, and the current understanding of SFMEs is very limited. Herein, we report an SFME consisting of isopentyl acetate (IA), n-propanol, and water, in which IA (a simple ester compound) and n-propanol are used as the oil phase and amphi-solvent, respectively. The microstructures and structural transition of the SFME were investigated by cyclic voltammetry, fluorescence spectroscopy, and UV-visible spectroscopy techniques. Moreover, three kinds of microstructures, namely, oil-in-water (O/W), bicontinuous (BC), and water-in-oil (W/O), have been identified in the SFME, which are directly verified by cryo-TEM observations. A change in the composition of the SFME may lead to a structural transition from O/W through BC to W/O or vice versa, which is similar to the case of traditional surfactant-based microemulsions (SBMEs). To the best of our knowledge, this is the first time that the microstructures and structural transition of an SFME obtained using a simple ester compound as the oil phase have been identified. Surfactant-free microemulsions (SFMEs) can form from the mixture of isopentyl acetate (oil phase), n-propanol (amphi-solvent), and water. They may show W/O, bicontinuous (BC), and O/W microstructures depending on the composition of the SFMEs.![]()
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Affiliation(s)
- Yuan Liu
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Jiaxin Song
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Wanguo Hou
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan
- P. R. China
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Xu J, Deng H, Song J, Zhao J, Zhang L, Hou W. Synthesis of hierarchical flower-like Mg2Al-Cl layered double hydroxide in a surfactant-free reverse microemulsion. J Colloid Interface Sci 2017; 505:816-823. [DOI: 10.1016/j.jcis.2017.06.080] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 06/18/2017] [Accepted: 06/23/2017] [Indexed: 11/28/2022]
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Flores ME, Shibue T, Sugimura N, Nishide H, Moreno-Villoslada I. Aggregation Number in Water/n-Hexanol Molecular Clusters Formed in Cyclohexane at Different Water/n-Hexanol/Cyclohexane Compositions Calculated by Titration 1H NMR. J Phys Chem B 2017; 121:10285-10291. [DOI: 10.1021/acs.jpcb.7b08848] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mario E. Flores
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 52017, Chile
| | | | | | | | - Ignacio Moreno-Villoslada
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 52017, Chile
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40
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Lucia A, Argudo PG, Guzmán E, Rubio RG, Ortega F. Formation of surfactant free microemulsions in the ternary system water/eugenol/ethanol. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.04.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Xu J, Deng H, Fu Y, Chen Y, Zhang J, Hou W. Surfactant-free microemulsions of 1-butyl-3-methylimidazolium hexafluorophosphate, propylamine nitrate, and water. SOFT MATTER 2017; 13:2067-2074. [PMID: 28217785 DOI: 10.1039/c7sm00155j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Generally, surfactants (or amphiphiles) are believed to be necessary components of microemulsions. However, it has been demonstrated that, in the absence of traditional surfactants, microemulsions can also form from a ternary system of two immiscible fluids (i.e., oil and water phases) and an amphi-solvent, but the current understanding of such surfactant-free microemulsions (SFMEs) is very limited. Herein, we report an SFME consisting of the hydrophobic ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), the protic IL propylamine nitrate (PAN), and water, in which bmimPF6 and PAN are used as the oil phase and the amphi-solvent, respectively. The microstructures and structural transitions of the SFME were investigated using cyclic voltammetry, fluorescence spectroscopy, and ultraviolet-visible spectroscopy. The SFME exhibited water-in-bmimPF6 (W/IL), bicontinuous (BC), and bmimPF6-in-water (IL/W) microstructures, depending on the composition of the ternary system, similar to the case of traditional surfactant-based microemulsions (SBMEs). The three kinds of microstructures were confirmed by cryogenic transmission electron microscopy (cryo-TEM) observations. To the best of our knowledge, this is the first report on SFMEs composed of two ILs as components, especially where one is used as the amphi-solvent.
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Affiliation(s)
- Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yunlei Fu
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yuquan Chen
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jing Zhang
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Wanguo Hou
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education), Shandong University, Jinan 250100, P. R. China.
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Yan X, Alcouffe P, Sudre G, David L, Bernard J, Ganachaud F. Modular construction of single-component polymer nanocapsules through a one-step surfactant-free microemulsion templated synthesis. Chem Commun (Camb) 2017; 53:1401-1404. [DOI: 10.1039/c6cc09701d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Formation of O/W surfactant-free microemulsions from water/oil/acetone ternary systems is exploited to construct precisely-defined shell-functionalized core-loaded nanocapsules with tunable diameters (ranging from 50 to 190 nm) in one step.
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Affiliation(s)
- Xibo Yan
- Université de Lyon
- Lyon
- France
- INSA-Lyon
- IMP
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44
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Vicentino PO, Cassella RJ. Novel extraction induced by microemulsion breaking: a model study for Hg extraction from Brazilian gasoline. Talanta 2017; 162:249-255. [DOI: 10.1016/j.talanta.2016.10.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/04/2016] [Accepted: 10/05/2016] [Indexed: 10/20/2022]
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Pogrzeba T, Schmidt M, Hohl L, Weber A, Buchner G, Schulz J, Schwarze M, Kraume M, Schomäcker R. Catalytic Reactions in Aqueous Surfactant-Free Multiphase Emulsions. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03384] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tobias Pogrzeba
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Sekr.
TC-8, D-10623 Berlin, Germany
| | - Marcel Schmidt
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Sekr.
TC-8, D-10623 Berlin, Germany
| | - Lena Hohl
- Chemical and Process Engineering, Technische Universität Berlin, Ackerstraße 76, D-13355 Berlin, Germany
| | - Ariane Weber
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Sekr.
TC-8, D-10623 Berlin, Germany
| | - Georg Buchner
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Sekr.
TC-8, D-10623 Berlin, Germany
| | - Joschka Schulz
- Chemical and Process Engineering, Technische Universität Berlin, Ackerstraße 76, D-13355 Berlin, Germany
| | - Michael Schwarze
- Plant and Process Safety, Technische Universität Berlin, Straße des 17. Juni 135, TK-01, D-10623 Berlin, Germany
| | - Matthias Kraume
- Chemical and Process Engineering, Technische Universität Berlin, Ackerstraße 76, D-13355 Berlin, Germany
| | - Reinhard Schomäcker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Sekr.
TC-8, D-10623 Berlin, Germany
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47
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Du C, Wu J, Wang X, Zheng P, Shen W. The Thermodynamic Properties of Dynol-604/AOT Mixed Reverse Micelles in Isooctane. J SOLUTION CHEM 2016. [DOI: 10.1007/s10953-016-0485-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Zemb TN, Klossek M, Lopian T, Marcus J, Schöettl S, Horinek D, Prevost SF, Touraud D, Diat O, Marčelja S, Kunz W. How to explain microemulsions formed by solvent mixtures without conventional surfactants. Proc Natl Acad Sci U S A 2016; 113:4260-5. [PMID: 27044068 PMCID: PMC4843454 DOI: 10.1073/pnas.1515708113] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Ternary solutions containing one hydrotrope (such as ethanol) and two immiscible fluids, both being soluble in the hydrotrope at any proportion, show unexpected solubilization power and allow strange but yet unexplained membrane enzyme activity. We study the system ethanol-water-octanol as a simple model of such kinds of ternary solutions. The stability of "detergentless" micelles or microemulsions in such mixtures was proposed in the pioneering works of Barden and coworkers [Smith GD, Donelan CE, Barden RE (1977)J Colloid Interface Sci60(3):488-496 and Keiser BA, Varie D, Barden RE, Holt SL (1979)J Phys Chem83(10):1276-1281] in the 1970s and then, neglected, because no general explanation for the observations was available. Recent direct microstructural evidence by light, X-ray, and neutron scattering using contrast variation reopened the debate. We propose here a general principle for solubilization without conventional surfactants: the balance between hydration force and entropy. This balance explains the stability of microemulsions in homogeneous ternary mixtures based on cosolvents.
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Affiliation(s)
- Thomas N Zemb
- ICSM (Institut de Chimie Séparative de Marcoule), UMR 5257 (Commissariat a l'energie atomique et aux energies alternatives/CNRS/Ecole Nationale Supérieure de Chimie de Montpellier, Université de Montpellier), 30207 Bagnols sur Cèze, France;
| | - Michael Klossek
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Tobias Lopian
- ICSM (Institut de Chimie Séparative de Marcoule), UMR 5257 (Commissariat a l'energie atomique et aux energies alternatives/CNRS/Ecole Nationale Supérieure de Chimie de Montpellier, Université de Montpellier), 30207 Bagnols sur Cèze, France; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Julien Marcus
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Sebastian Schöettl
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Dominik Horinek
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Sylvain F Prevost
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, CEDEX 9, France
| | - Didier Touraud
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany
| | - Olivier Diat
- ICSM (Institut de Chimie Séparative de Marcoule), UMR 5257 (Commissariat a l'energie atomique et aux energies alternatives/CNRS/Ecole Nationale Supérieure de Chimie de Montpellier, Université de Montpellier), 30207 Bagnols sur Cèze, France
| | - Stjepan Marčelja
- Department of Applied Mathematics, Research School of Physics & Engineering, Australian National University, Canberra, ACT 0200, Australia
| | - Werner Kunz
- ICSM (Institut de Chimie Séparative de Marcoule), UMR 5257 (Commissariat a l'energie atomique et aux energies alternatives/CNRS/Ecole Nationale Supérieure de Chimie de Montpellier, Université de Montpellier), 30207 Bagnols sur Cèze, France; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany;
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49
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Schöttl S, Horinek D. Aggregation in detergent-free ternary mixtures with microemulsion-like properties. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.02.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Surfactant-free alternative fuel: Phase behavior and diffusion properties. J Colloid Interface Sci 2016; 463:173-9. [PMID: 26520824 DOI: 10.1016/j.jcis.2015.10.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/13/2015] [Accepted: 10/15/2015] [Indexed: 11/21/2022]
Abstract
Phase behavior of the three components, 1-propanol, water and oil is studied at 10, 25, and 40°C. Biodiesel, limonene and diesel are used as oil phases. NMR self-diffusion measurements are performed to investigate the microstructure of the one-phase regions. Tie lines in the two-phase regions are determined both by proton NMR analysis and compared with theoretical calculations. NMR self-diffusion results for the different components in these systems do not show any sign of confinement or obstructions, demonstrating these mixtures to be structureless solutions. A good agreement between the experimental and calculated phase behavior is obtained. The determined tie lines in the two-phase regions show higher affinity of 1-propanol to water than to oil.
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