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Ye M, Zhang H, Wu Z, Ding C, Jin Z, Wang F, Bian H. Supercritical carbon dioxide microemulsion stabilized with zwitterionic surfactant: A dissipative particle dynamics simulation study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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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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Alekseev ES, Alentiev AY, Belova AS, Bogdan VI, Bogdan TV, Bystrova AV, Gafarova ER, Golubeva EN, Grebenik EA, Gromov OI, Davankov VA, Zlotin SG, Kiselev MG, Koklin AE, Kononevich YN, Lazhko AE, Lunin VV, Lyubimov SE, Martyanov ON, Mishanin II, Muzafarov AM, Nesterov NS, Nikolaev AY, Oparin RD, Parenago OO, Parenago OP, Pokusaeva YA, Ronova IA, Solovieva AB, Temnikov MN, Timashev PS, Turova OV, Filatova EV, Philippov AA, Chibiryaev AM, Shalygin AS. Supercritical fluids in chemistry. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4932] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Adjustable polystyrene nanoparticle templates for the production of mesoporous foams and ZnO inverse opals. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04791-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AbstractThe manifold applications of porous materials, such as in storage, separation, and catalysis, have led to an enormous interest in their cost-efficient preparation. A promising strategy to obtain porous materials with adjustable pore size and morphology is to use templates exhibiting the appropriate nanostructure. In this study, close-packed polystyrene (PS) nanoparticles, synthesized by emulsion polymerization, were used to produce porous PS and ZnO inverse opals. The size and distribution of the polystyrene nanoparticles, characterized by dynamic light scattering (DLS), small-angle neutron scattering (SANS), and scanning electron microscopy (SEM), were controlled via the concentration of sodium dodecyl sulfate (SDS). Systematic measurements of the water/styrene-interfacial tension show that the critical micelle concentration (CMC) of the ternary water–styrene–SDS system, which determines whether monodisperse or polydisperse PS particles are obtained, is considerably lower than that of the binary water–SDS system. The assemblies of close-packed PS nanoparticles obtained via drying were then studied by small-angle X-ray scattering (SAXS) and SEM. Both techniques prove that PS nanoparticles synthesized above the CMC result in a significantly unordered but denser packing of the particles. The polystyrene particles were subsequently used to produce porous polystyrene and ZnO inverse opals. While the former consists of micrometer-sized spherical pores surrounded by extended open-cellular regions of mesopores (Rpore ≈ 25 nm), the latter are made of ZnO-nanoparticles forming a structure of well-aligned interconnected pores.
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Simultaneous study of molecular and micelle diffusion in a technical microemulsion system by dynamic light scattering. J Colloid Interface Sci 2019; 544:144-154. [DOI: 10.1016/j.jcis.2019.02.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/01/2019] [Accepted: 02/21/2019] [Indexed: 11/23/2022]
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Koller TM, Prucker T, Cui J, Klein T, Fröba AP. Interfacial tensions and viscosities in multiphase systems by surface light scattering (SLS). J Colloid Interface Sci 2019; 538:671-681. [DOI: 10.1016/j.jcis.2018.11.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/23/2018] [Accepted: 11/24/2018] [Indexed: 10/27/2022]
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Study on the applicability of dynamic light scattering (DLS) to microemulsions including supercritical carbon dioxide-swollen micelles. J Colloid Interface Sci 2017; 499:202-208. [DOI: 10.1016/j.jcis.2017.03.111] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/28/2017] [Accepted: 03/28/2017] [Indexed: 11/21/2022]
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Grassberger L, Koch K, Oberhoffer R, Müller A, Klemmer HF, Strey R. Blowing agent free generation of nanoporous poly(methylmethacrylate) materials. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4012-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Müller A, Pütz Y, Oberhoffer R, Becker N, Strey R, Wiedenmann A, Sottmann T. Kinetics of pressure induced structural changes in super- or near-critical CO2-microemulsions. Phys Chem Chem Phys 2015; 16:18092-7. [PMID: 25061846 DOI: 10.1039/c3cp53790k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO2-microemulsions show strong pressure dependent properties. Using time-resolved SANS to investigate the kinetics of structural changes upon periodic pressure jumps of adjustable amplitude, we found that the compression-induced formation of cylinders occurs on a timescale of one second, whereas the expansion-induced disintegration into CO2 swollen spherical micelles is much faster.
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Affiliation(s)
- Alexander Müller
- Department of Chemistry, University of Cologne, Luxemburger Straße 116, 50939 Cologne, Germany
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Pütz Y, Grassberger L, Lindner P, Schweins R, Strey R, Sottmann T. Unexpected efficiency boosting in CO2-microemulsions: a cyclohexane depletion zone near the fluorinated surfactants evidenced by a systematic SANS contrast variation study. Phys Chem Chem Phys 2015; 17:6122-34. [DOI: 10.1039/c4cp05435k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Concentration gradient of cyclohexane in a CO2/cyclohexane swollen micelle stabilized by fluorinated surfactants revealed by the GIFT analysis of a SANS contrast variation.
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Affiliation(s)
- Y. Pütz
- Department of Chemistry
- University of Cologne
- D-50939 Cologne
- Germany
| | - L. Grassberger
- Department of Chemistry
- University of Cologne
- D-50939 Cologne
- Germany
| | - P. Lindner
- Institut Laue-Langevin
- LSS Group
- F-38000 Grenoble
- France
| | - R. Schweins
- Institut Laue-Langevin
- LSS Group
- F-38000 Grenoble
- France
| | - R. Strey
- Department of Chemistry
- University of Cologne
- D-50939 Cologne
- Germany
| | - T. Sottmann
- Institute of Physical Chemistry
- University of Stuttgart
- D-70569 Stuttgart
- Germany
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Affiliation(s)
- Stéphane Costeux
- The Dow Chemical Company; Dow Building Solutions, 1605 Joseph Dr., 200 Larkin Center Midland Michigan 48674
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Costeux S, Khan I, Bunker SP, Jeon HK. Experimental study and modeling of nanofoams formation from single phase acrylic copolymers. J CELL PLAST 2014. [DOI: 10.1177/0021955x14531972] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Medium to low density thermoplastic nanofoams have previously been produced using nanoparticles as nucleating center. Here we show that by designing the molecular structure of the polymer matrix to achieve high CO2 solubility while controlling the glass transition temperature, it is possible to produce nanofoams with cell nucleation densities as high as 1016/cm3 without introducing nucleation aids. This was achieved by maximizing foam expansion without uncontrolled cell ripening for a series of acrylic copolymers, which were foamed under a set of standard conditions. To predict the role of foaming conditions on foam characteristics, a theoretical foaming model was built to simulate cell nucleation, growth and foam stabilization. Experimental or predicted properties of the polymer/carbon dioxide mixture were used as inputs. Despite simplifying assumptions, such as the use of classical nucleation equations, the semi-quantitative model provides insight into the foam expansion behavior and validates experimental observations.
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Affiliation(s)
- Stéphane Costeux
- The Dow Chemical Company, Dow Building and Construction, Midland, MI, USA
| | - Irfan Khan
- The Dow Chemical Company, Corporate R&D, Freeport, TX, USA
| | - Shana P Bunker
- The Dow Chemical Company, Dow Building and Construction, Midland, MI, USA
| | - Hyun K Jeon
- The Dow Chemical Company, Dow Electronic Materials, Seoul, Korea
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Carbon Dioxide in Ionic Liquid Microemulsions. Angew Chem Int Ed Engl 2011; 50:9911-5. [DOI: 10.1002/anie.201103956] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Indexed: 12/15/2022]
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Zhang J, Han B, Li J, Zhao Y, Yang G. Carbon Dioxide in Ionic Liquid Microemulsions. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Klostermann M, Foster T, Schweins R, Lindner P, Glatter O, Strey R, Sottmann T. Microstructure of supercritical CO2-in-water microemulsions: a systematic contrast variation study. Phys Chem Chem Phys 2011; 13:20289-301. [DOI: 10.1039/c1cp22000d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Holderer O, Klostermann M, Monkenbusch M, Schweins R, Lindner P, Strey R, Richter D, Sottmann T. Soft fluctuating surfactant membranes in supercritical CO2-microemulsions. Phys Chem Chem Phys 2011; 13:3022-5. [DOI: 10.1039/c0cp01199a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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