Relevant bibliographies by topics / Reversed micelle

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  2. Dissertations / Theses
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Academic literature on the topic 'Reversed micelle'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Reversed micelle"

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Mwalupindi, Averrin G., Rezik A. Agbaria, and Isiah M. Warner. "Synthesis and Characterization of the Surfactant Terbium 3-[[1,2-Bis-[[(2-Ethylhexyl)Oxy]Carbonyl]Ethyl]Thio]Succinate as a Reagent for Determining Organic Analytes." Applied Spectroscopy 48, no. 9 (September 1994): 1132–37. http://dx.doi.org/10.1366/0003702944029497.

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The surfactant terbium 3-[[1,2-bis[[(2-ethylhexyl)oxy]carbonyl]ethyl]thio]succinate has been synthesized and characterized by use of its absorption, luminescence, and microviscosity properties. In the presence of small amounts of water, this surfactant aggregates in cyclohexane to form reversed micelles containing Tb(III) counterions. The critical reverse micelle concentration has been determined to be 5.7 × 10−5 M with the use of an optical probe. Organic analytes solubilized in reverse micelles have been detected indirectly with the use of the luminescence characteristics of Tb(III) counterions. The detection scheme is based on energy transfer from the solubilized organic donor to acceptor Tb(III) counterions. Analytical figures of merit for the micellar system in the presence of organic analytes are presented. The microviscosity of the reverse micellar core has been estimated with the use of a viscosity-sensitive luminescent probe.
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Shapiro, Yurii E., Nikolai A. Budanov, Andrei V. Levashov, Nataliya L. Klyachko, Yurii L. Khmelnitsky, and Karel Martinek. "13C NMR of study of entrapping proteins (α-chymotrypsin) into reversed micelles of surfactants (aerosol OT) in organic solvents (n-octane)." Collection of Czechoslovak Chemical Communications 54, no. 4 (1989): 1126–34. http://dx.doi.org/10.1135/cccc19891126.

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Hydrated reversed micelles of Aerosol OT (AOT) in octane have been studied by 13C NMR spectroscopy. The changes of spin-lattice relaxation times (T1) for individual segments of the AOT molecule, induced by entrapping a protein (α-chymotrypsin) into the micelle, have been determined by the inversion-recovery technique. The dramatic (three-fold) increase of T1 found for the α-CH2 groups in the AOT molecules indicates that (unlike in the unfilled micelle) in the protein-containing micelle the boundary of the water cavity is shifted outward (0.5-0.7 nm, under the given experimental conditions), the alkyl chains of the surfactant being “flooded” by water molecules. This observation explains why the outer size of the reversed micelle does not change on insertion of a bulky protein molecule.
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Huppertz, Thom, and Cornelis G. de Kruif. "Disruption and reassociation of casein micelles during high pressure treatment: influence of whey proteins." Journal of Dairy Research 74, no. 2 (February 12, 2007): 194–97. http://dx.doi.org/10.1017/s0022029906002263.

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In the study presented in this article, the influence of added α-lactalbumin and β-lactoglobulin on the changes that occur in casein micelles at 250 and 300 MPa were investigated by in-situ measurement of light transmission. Light transmission of a serum protein-free casein micelle suspension initially increased with increasing treatment time, indicating disruption of micelles, but prolonged holding of micelles at high pressure partially reversed HP-induced increases in light transmission, suggesting reformation of micellar particles of colloidal dimensions. The presence of α-la and/or β-lg did not influence the rate and extent of micellar disruption and the rate and extent of reformation of casein particles. These data indicate that reformation of casein particles during prolonged HP treatment occurs as a result of a solvent-mediated association of the micellar fragments. During the final stages of reformation, κ-casein, with or without denatured whey proteins attached, associates on the surface of the reformed particle to provide steric stabilisation.
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Klyachko, Natalia L., Natalia G. Bogdanova, Andrei V. Levashov, and Karel Martinek. "Micellar Enzymology: Superactivity of Enzymes in Reversed Micelles of Surfactants Solvated by Water/Organic Cosolvent Mixtures." Collection of Czechoslovak Chemical Communications 57, no. 3 (1992): 625–40. http://dx.doi.org/10.1135/cccc19920625.

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Catalytic properties of α-chymotrypsin, peroxidase and laccase, dissolved in water-immiscible organic solvents by entrapping them into the reversed micelles of surfactants solvated by water/organic cosolvent (glycerol or 1,4- or 2,3-butanediol or dimethyl sulfoxide) mixtures, are studied. As micelle-forming surfactants, sodium salt of bis(2-ethylhexyl)sulfosuccinate (Aerosol OT) in n-octane or cetyltrimethylammonium bromide in n-octane/chloroform (1 : 1 by volume) mixture are used. The dependences of the catalytic activity on the surfactant solvation degree are bell-shaped. Maxima of the catalytic activity of enzymes solubilized in the micellar systems are observed at such optimum values of the surfactant solvation degree at which the size of micellar inner cavity and of the entrapped protein molecule is approximately equal. With decreasing content of water in the micellar media studied, the catalytic activity of the solubilized enzymes increases considerably, and is much (10-100 times) higher than in bulk aqueous buffers. In conclusion, possible mechanisms of the micellar effects are suggested.
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Burns, Janet L., and Yeshayahu Talmon. "Cryo-TEM of micellar solutions." Proceedings, annual meeting, Electron Microscopy Society of America 45 (August 1987): 500–501. http://dx.doi.org/10.1017/s0424820100127141.

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Micelles are aggregates of amphiphilic molecules, i.e., molecules that have both a hydrophilic and a hydrophobic (lyophilic) moiety. These aggregates, in equilibrium with free molecules, may attain various shapes: spherical, spheroidal, or cylindrical, depending on concentration, temperature, and presence of other solutes in the system. In all of these aggregates the hydrophilic “heads” are in contact with water, and the hydro-phobic “tails” form a non-aqueous domain within the micelle. When the solvent is non-aqueous the situation is reversed; “inverted micelles” form where the hydrophobic “tails” point outwards into the solvent. Most structural data on micellar systems have come from indirect methods such as NMR, light and x-ray scattering. Interpretation of these data is model dependent. Only TEM is capable of producing direct images of micellar aggregates. However, precaution should be taken to preserve the labile microstructures of these systems during specimen preparation.
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Pires, M. J., D. M. F. Prazeres, and J. M. S. Cabral}. "Protein assay in reversed micelle solutions." Biotechnology Techniques 7, no. 4 (April 1993): 293–94. http://dx.doi.org/10.1007/bf00150901.

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SENO, Manabu, and Hidetaka NORITOMI. "Enzyme reaction in reversed micelle system." Kagaku To Seibutsu 24, no. 9 (1986): 569–75. http://dx.doi.org/10.1271/kagakutoseibutsu1962.24.569.

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Takagi, Shinsuke, Kyosuke Arakawa, Tetsuya Shimada, and Haruo Inoue. "Reversed Micelles Formed by Polyfluorinated Surfactant II; the Properties of Core Water Phase in Reversed Micelle." Bulletin of the Chemical Society of Japan 92, no. 7 (July 15, 2019): 1200–1204. http://dx.doi.org/10.1246/bcsj.20190086.

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Hagen, Anna J., T. Alan Hatton, and Daniel I. C. Wang. "Protein refolding in reversed micelles: Interactions of the protein with micelle components." Biotechnology and Bioengineering 35, no. 10 (April 25, 1990): 966–75. http://dx.doi.org/10.1002/bit.260351003.

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Fangqiong, Tang, Guo Donghong, and Jiang Long. "Biosensors with reversed micelle-enzyme sensitive membrane." Science in China Series B: Chemistry 43, no. 1 (February 2000): 34–39. http://dx.doi.org/10.1007/bf03028847.

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Dissertations / Theses on the topic "Reversed micelle"

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Sinha, Kaustav. "Approach to develop reverse micelle large-scale synthesis process for magnetic nanopowders /." abstract and full text PDF (free order & download UNR users only), 2005. http://0-wwwlib.umi.com.innopac.library.unr.edu/dissertations/fullcit/1433113.

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Thesis (M.S.)--University of Nevada, Reno, 2005.
"August, 2005." Includes bibliographical references. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2005]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
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Bandyopadhyaya, Rajdip. "Modelling Of Precipitation In Reverse Micelles." Thesis, Indian Institute of Science, 1999. http://hdl.handle.net/2005/145.

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Nanoparticles have important applications in ceramics, metal catalysts, semiconductors etc. They are normally required to be of small size (~ nm) and monodisperse. The aim of the present work is to model the formation of nanoparticles, obtained by precipitation in reverse micellar microreactors. These are dispersions of tiny water drops in a surfactant laden oil medium. Two systems were investigated: (i) Reverse micelles, having nanometer sized spherical water droplets in the micellar core and (ii) Water-in-oil emulsions, having micron-sized aqueous drops. Two modes of precipitation, namely, gas-liquid (g-1) and liquid-liquid (1-1) were studied. In each case, the models could predict the number, average size and size distribution of the particles reported in literature. Two groups have obtained widely divergent number and size of CaCO3 nanoparticles, formed by g-1 precipitation in reverse micelles. These particles are used as a fine suspension in lube-oil additives, where they serve to neutralize acid produced during combustion in engines. Kandori et al. (J. Colloid Interface Sci, 122,1988, 78) obtained particles of about 100 nm size, by passing CO2 through a reverse micellar solution, containing dissolved Ca(OH)2 in the micellar core. Roman et al. (J. Colloid Interface Sci., 144,1991, 324), instead of using lime solution; added micron-sized solid lime particles in the oil and generated the reverse micelles by in situ reaction. This is a commercial process known as overbasing. It led to a higher amount of lime in the micelles as well as unreacted lime particles in oil, at the beginning of the experiment Upon passing CO2, they got particles of only 6 nm in size, compared to 100 nm reported by Kandori et al.. Furthermore, while Kandori et al. found that one particle formed from 108 micelles, Roman et al. got one particle out of only ten micelles. We have modelled the two processes in a common framework to explain the reported disparity in particle characteristics. A time scale analysis of CO2 mass transfer, reaction, collision-fusion of micelles, nucleation, and growth of particles was carried out It showed that, in the experiments of Kandori et al., the rate limiting steps are nucleation and fusion. The analysis also indicates that the contents of a particular micelle are well mixed and reaction of lime and incoming CO2 can be treated as instantaneous. In the process of Kandori et al., the amount of lime taken initially being very small, the average number of product molecules in a micelle is well below one. Rapid Brownian coalescence and exchange of micellar contents leads to Poisson distribution of CaCO3(l) molecules formed by reaction. The low occupancy therefore suggests that most of the micelles are empty. Nucleation in a particular micelle is much slow and occurs when it has a critical number of molecules. Thus only very few micelles can nucleate. Comparison of nucleation and growth time scales - both intrinsic growth in a micelle and growth during fusion of nucleated and non-nucleated micelles - show that growth is much faster than both nucleation and collision. Hence a micelle can have only one nucleus, with subsequent growth during collisions. A population balance equation (PBE) is written involving the above steps. Solution of the moments of the distribution yields the number of CaCO3 particles, its size, coefficient of variance (COV) etc. The model not only predicts the ratio of number of micelles to particles, obtained experimentally as 108, but also captures the maxima in this quantity with increasing micellar size. The increase in average particle size with micellar size is also predicted well. The process of of Roman et ai, in addition, involves the time scale of solubilization of solid lime into micelles. Its comparison with other time scales demarcates their experiments into two distinct phases. Phase I consists of reaction of lime initially present in micelles. Time scale analysis also suggests that, as the lime content in the micelles is large, a high degree of supersaturation is rapidly generated. This results in a burst of nuclei. The other conclusions, like, well-mixed micelle, Poisson distribution of CaCO3(l) molecules, instantaneous growth and mono-nucleated micelles are found to hold good. Once the pre-existing lime is finished, relative time scales indicate that, further precipitation is controlled entirely by fresh solubilization of lime. This marks the beginning of phase II. However, solubilization being the slowest step, CaCO3(l) in micelles never builds up for any further nucleation. Phase II thus consists of pure growth of the particles formed in phase I. On developing more general PBEs and with solution of resulting moment equations - written separately for the two phases - the experimental data on number of particles and temporal evolution to the final particle size of 6 nm could be predicted very well. The model also captures the qualitative trend in COV of particle radius with time. Thus within the same framework we could successfully predict both the results, differing by seven orders of magnitude. The above analysis indicates that relative rates of nucleation, fusion-growth and mass transfer of gas controls the carbonation process. We further simplify the process and obtain an analytical solution in the limit of instantaneous mass transfer. The solution gives close first estimates for both the experiments and also indicates the smallest panicle size that could be obtained for a given experimental condition. In contrast to g-1 mode, precipitation in 1-1 mode - using two reverse micellar solutions having two reactants- occurs only on coalescence of two micelles. To obviate the solution of multivariate PBEs, we have developed a general Monte Carlo (MC) simulation scheme for nanoparticle formation, using the interval of quiescence technique (IQ). Starting with a fixed number of micelles, we conduct each coalescence-redispersion and nucleation events in this population, in the ratio of their relative frequencies. Our simulation code is much more general and realistic than the scheme of Li and Park (Langmuir, 15,1999, 952). Poisson distribution with realistic micellar occupancies of reactants, binomial redispersion of solutes after fission, a nucleation rate with critical number of molecules and Brownian collision-fusion rates were used. These considerations are based on our earlier findings in g-1 precipitation and those known in the literature too. The simulation of Li and Park then becomes a special case of our code. Our simulation code was then used to predict experimental data on two systems. The results of Lianos and Thomas (Chem. Phys. Lett. 125, 1986, 299 and /. Colloid Interface 5c/., 117, 1987, 505), on number of molecules per CdS particle, as a function of micelle size and reactant concentrations have been predicted very well. For the Fe(OH)3 nanoparticles, our simulation provides a better prediction of the experimental particle size range, than that of Li and Park. Finally, 1-1 precipitation on mixing two emulsions, having respectively the two reactants, has been simulated. Here, large reactant amount leads to multiple nucleation in a single drop and renders growth rate to be finite. This requires solving a PBE for particle population in each drop. Moreover, emulsions have a drop size distribution due to independent coalescence and breakage. The IQ technique was used for handling these events. Thus a composite model of PBE and MC for a drop population was developed. Simulation of particle size distribution in MgCO3 precipitation shows that nearly monodisperse nanoparticles can be produced in emulsions. Furthermore, average particle size can be controlled by changing reactant concentration in a drop. The findings of the thesis have provided new issues to be addressed in modelling nanoparticle formation. It points out the importance of finding models for coalescence efficiency and critical nuclear size in micelles. Extension of our model and simulation to precipitation in other organized surfactant assemblies can be done by starting from appropriate time scale analysis.
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Petit, Christophe. "Relation entre structure et reactivite en micelles inverses d'aot." Paris 6, 1988. http://www.theses.fr/1988PA066473.

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Les micelles inverses d'aerosol ot sont des muroemulsions eau/huile dont la taille est controlee par la quantite d'eau solubilisee. La solubilisation des petites molecules ainsi que des petites proteines entrainent des perturbations dans la structure et la reactivite. Un modele de localisation des sondes en micelle est propose a partir des mesures de structure, par diffusion des rayons x, et de reactivite par radiolyse pulse. De plus, une synthese in situ des semiconducteurs en micelle inverse est exposee
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Brochette, Pascal. "Reactivite en micelles inverses." Paris 6, 1987. http://www.theses.fr/1987PA066087.

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En utilisant l'electron hydrate comme sonde intramicellaire, etude du comportement de l'eau au sein des microphases aqueuses, et du transfert d'electron de la chlorophylle vers des viologenes dans la microemulsion
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Alexandridis, Paschalis. "Thermodynamics and dynamics of micellization and micelle-solute interactions in block-copolymer and reverse micellar systems." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37749.

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Ladanowski, Caroline. "Separation with reverse-micelles." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60587.

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Reverse-micelles are surfactant aggregates in an apolar solvent. The surfactants, which must have two hydrophobic tails, cluster around a water core. The effects of the compositions of the solvent and the aqueous phase on water solubilization were studied for two anionic surfactants: sodium di-2-ethylhexylsulfosuccinate (AOT) and dinonylnaphthalene sulfonic acid (DNNSA). Single straight chain alkanes having 6-17 carbons, mixtures of these alkanes and branched alkanes were used as solvents. The aqueous phases consisted of salts and buffers.
For AOT in straight chain alkanes, water uptake increased as the length of the chain approached 9 carbons, the length of the AOT hydrocarbon tail. As the solvent length increased further, a critical carbon number was reached above which there was no water uptake. Different buffers shifted the critical carbon number somewhat. Mixtures of straight chain alkanes behaved similar to single alkanes when compared on the basis of volume-average carbon number. Branched alkanes solubilized more water than their straight chain isomers. For DNNSA the water uptake was the same for all solvents.
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Bardez, Élisabeth. "Relation entre structure et reactivite acido-basique de l'eau incluse dans les micelles inverses." Paris 6, 1987. http://www.theses.fr/1987PA066033.

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Ashrafizadeh, Seyed Nezameddin. "Cation exchange with reverse-micelles." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61109.

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Experimental and theoretical studies on the extraction of the cation K$ sp+$ and Mg$ sp{++}$ from a bulk aqueous phase to an organic phase using the water/dinonylnaphthalene sulfonic acid (HD)/heptane reverse-micellar system was conducted. The counter ion of the surfactant, H$ sp+$, was exchanged with the alkali metal cations in the aqueous phase. Two different types of experiments were conducted. The first set involved a constant total normality of ions while the second investigated the effect, of varying the normality of ions. Electrolyte solutions with molarities ranging from 0 to 1 were contacted with a reverse-micellar organic containing different concentrations of surfactant with different types of counter ions.
The HD reverse-micellar extraction system exhibited behavior similar to that of conventional ion-exchange resin systems. A preferential extraction for Mg$ sp{++}$ over K$ sp+$ was observed. The efficiency of the extraction was high for low salt concentrations and it was independent of surfactant concentration. The amount of water uptake was low, with W$ sb{o}$ ranging between 4 and 10. For a wide range of salt and surfactant concentrations W$ sb{o}$ was independent of surfactant concentration. The HD surfactant showed a low solubility in the aqueous phase.
The results of the equilibrium partition experiments were correlated using a thermodynamic model. Interaction parameters determined from binary system experimental data were used to predict the ternary system partition behavior. The ternary system predictions were compared with experimental results and found to be satisfactory.
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Pham, Thi Minh Hai. "Protein extraction using reverse micelles." Thesis, University of Greenwich, 2015. http://gala.gre.ac.uk/18122/.

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Reverse micelles are self-organized aggregates formed by a surfactant in a non-polar solvent or oil. The presence of a water pool in the polar core of reverse micelles is of considerable advantage in protein extraction. A lot of researches have been done with ionic reverse micelles applied in protein extraction. However, this ability of non-ionic reverse micelles has not been fully understood and therefore requires more research. In this project, different surfactants (anionic AOT, cationic CTAB, non-ionic triblock L61 copolymer) were investigated for their ability to form RM and for their application in protein extraction. It was found that lysozyme could be extracted using an AOT RMS, but not with a CTAB RMS. For the first time, an aromatic solvent, p-xylene, was used for the extraction of lysozyme and it was found that the AOT in p-xylene RM system resulted in the higher lysozyme activity (73.81 %) compared to an AOT/isooctane RM system (43.2 %). The effect of different salts (KCl, KF, KBr) on the FE and BE of BSA was investigated using the CTAB in mixture of 1-bromooctane, 1-hexanol and petroleum ether. The results indicated that KCl gave the highest extraction efficiency of 64 % as compared to around 40 % with both cases of KF and KBr. The secondary structure of extracted BSA was maintained with KCl only. L61 pluronics polymers was investigated for its reverse micelles forming ability and it was established that small reverse micelles with a maximum W0 of 4 was formed. Because of the small size of L61 reverse micelles, lysozyme could not be extracted but was precipitated out when combined with the co-surfactant AOT. The activity of the recovered lysozyme from the precipitate was maintained (66% as compared with native lysozyme). Moreover, if L61 was used as a co-surfactant with AOT reverse micelles, extraction efficiency was improved (88 %) and the activity of the extracted ly-sozyme was increased (56 %) as compare to extraction with an AOT system alone (46 %). These studies thus gives useful insights in the role of individual and mixed surfactant systems in the extraction and precipitation of proteins.
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Gunther, Selina Lavinia. "Polypeptide extraction using reverse micelles." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/5529.

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The reverse micelle (RM) extraction of human IgG4 monoclonal antibodies (MAbs), humanized IgG4 MAb B72.3 Fab fragments and horse heart cytochrome-c was investigated. The effects of system parameters on forward (FE) and backward (BE) extraction was examined, and optimal extraction conditions were determined. Sodium bis(2-ethylhexyl)sulfosuccinate (AOT), bis(2-ethylhexyl)phosphate (HDEHP), isooctane and corn oil were the model surfactants and solvents. Precipitate formation was investigated, and non-ionic (polyoxyethylene(4) lauryl ether i.e. Brij 30) and counterionic (trioctylmethylammonium chloride i.e. TOMAC) surfactants were assessed to reduce precipitate formation and increase extraction yields. Protein in the precipitate was measured using acetone precipitation. Conventional RM extraction of IgG4 for AOT- and HDEHP-isooctane resulted in yields of up to 99% FE, 58% BE for AOT-isooctane, and 92% BE for HDEHP-isooctane. It was found for AOT-isooctane with TOMAC for cytochrome-c 81% FE and 98% BE; and 41% FE and 85% BE for AOT-isooctane with Brij 30 and TOMAC, 56% FE and 71% BE for AOT-corn oil, 62% FE and 89% BE for HDEHP-isooctane, and 57% FE and 59% BE for HDEHP-corn oil with TOMAC for Fab fragments. Hollow fibre membrane (HFM) extraction of cytochrome-c resulted in complete FE and 40% BE with TOMAC; and with Fab fragments resulted in 99% FE and 79% BE for AOT, and in 88% FE and 46% BE for HDEHP with Brij 30. HFM FE using two aqueous phases showed that the quantity of Fab fragments adsorbed to the membrane surface and/or stuck in the membrane pores were negligible. Structural analysis revealed that precipitate formation during HFM module extraction was not an issue compared to conventional FE, where it structurally damaged and prevented the Fab fragments and MAbs from successfully transferring into the RM phase. RM phase water content analysis from both extraction methods confirmed that RM extraction was successful.
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Books on the topic "Reversed micelle"

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Berezin, Ilʹi͡a Vasilʹevich. Deĭstvie fermentov v obrashchennykh mit͡s︡ellakh: Dolozheno na tridt͡s︡atʹ devi͡a︡tom ezhegodnom Bakhovskom chtenii 17 marta 1983 g. Moskva: "Nauka", 1985.

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1949-, Hinze Willie L., ed. Reversed micelles. Greenwich, Conn: JAI Press, 1994.

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Structure and reactivity in reverse micelles. Amsterdam: Elsevier, 1989.

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Luisi, P. L., and B. E. Straub. Reverse Micelles: Biological and Technological Relevance of Amphiphilic Structures in Apolar Media. Springer, 1999.

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Zhao, Ailian. Synthesis and reactivity of ceramic particles formed in reversed micelles. 1991.

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Hall, Rex Elliot. Applications of reverse micelles in normal phase liquid chromatography. 1989.

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Luisi, P. L., and B. E. Straub. Reverse Micelles: Biological and Technological Relevance of Amphiphilic Structures in Apolar Media. Springer, 2014.

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Biomolecules in organic solvents. Boca Raton: CRC Press, 1992.

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Hinze, Willie L. Organized Assemblies in Chemical Analysis Vol. 1: Reversed Micelles (Organized Assemblies in Chemical Analysis Vol. 1). JAI Press, 1994.

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United States. National Aeronautics and Space Administration., ed. Reverse micelle based synthesis of microporous materials in microgravity: (supported by NASA grant/contract no. NAG3-1416), final report. [Washington, DC: National Aeronautics and Space Administration, 1995.

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Book chapters on the topic "Reversed micelle"

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Kakuchi, Toyoji, and Naoya Sugimoto. "Reversed-Type Micelle Formation Property of End-Glycosidated Polystyrene." In ACS Symposium Series, 177–84. Washington, DC: American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0812.ch013.

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Dekker, Matthijs. "Reversed Micelles for Protein Purification." In Molecular Interactions in Bioseparations, 533–44. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4899-1872-7_35.

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Boicelli, C. A., F. Conti, M. Giomini, and A. M. Giuliani. "Water Organization in Reversed Micelles." In Physical Methods on Biological Membranes and Their Model Systems, 141–62. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-7538-8_11.

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Laane, Colja, and Matthijs Dekker. "Biotechnological Applications Of Reversed Micelles." In Surfactants in Solution, 1–13. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0839-3_1.

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Pingarrón, J. M., and A. J. Reviejo. "Amperometric Biosensors in Reversed Micelles." In Biosensors for Direct Monitoring of Environmental Pollutants in Field, 305–16. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-8973-4_28.

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Leodidis, E. B., and T. A. Hatton. "Selective Solubilisation in Reversed Micelles." In The Structure, Dynamics and Equilibrium Properties of Colloidal Systems, 201–20. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3746-1_14.

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Prazeres, D. M. F., F. Lemos, F. A. P. Garcia, and J. M. S. Cabral. "Reversed Micellar Membrane Bioreactor." In Engineering of/with Lipases, 483–513. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1671-5_31.

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Kon-no, Kijiro. "Properties and Applications of Reversed Micelles." In Surface and Colloid Science, 125–51. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3002-2_3.

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Hasmann, Francislene Andrea, Adalberto Pessoa, and Ines Conceicao Roberto. "β-Xylosidase Recovery by Reversed Micelles." In Twenty-First Symposium on Biotechnology for Fuels and Chemicals, 1101–11. Totowa, NJ: Humana Press, 2000. http://dx.doi.org/10.1007/978-1-4612-1392-5_86.

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Orlich, Bernhard, and Reinhard Schomäcker. "Enzyme Catalysis in Reverse Micelles." In History and Trends in Bioprocessing and Biotransformation, 185–208. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-44604-4_6.

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Conference papers on the topic "Reversed micelle"

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Kurahashi, Kensuke, Osamu Tomioka, and Yoshihiro Meguro. "Phase Behavior and Reverse Micelle Formation in Supercritical CO2 With DTAB and F-Pentanol for Decontamination of Radioactive Wastes." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40257.

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To develop a metal separation method using supercritical CO2 (scCO2) solvent for the decontamination process of radioactive wastes, the reverse micelle formation in scCO2 was investigated. Dodecyltrimethylammonium bromide (DTAB) as a surfactant to form the reverse micelles and 2,2,3,3,4,4,5,5-octafluoro-1-pentanol (F-pentanol) as a modifier to increase the solubility of DTAB into scCO2 were used. The reverse micelles could be formed by using 0.02 mol/dm3 DTAB and 0.45 mol/dm3 F-pentanol. A water concentration dissolved in scCO2 was increased with an increase of pressure, and 0.42 mol/dm3 water, which was 3 times larger than that in the neat CO2, could be dissolved in scCO2 at 38 MPa. Moreover, 0.1 mol/dm3 HNO3 could dissolve at the same pressure as water. On the other hand, it was found that the solubility of water at outside of reverse micelles increased with F-pentanol. The ratio of water and F-pentanol affected the phase behavior of water in scCO2.
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Kamel, Ahmed H., and Ahmed Alzahabi. "Effects of Salinity and Temperature on Rheological and Flow Characteristics of Surfactant-Based Fluids." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20025.

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Abstract Surfactant-based, SB fluids exhibit complex rheological behavior due to substantial structural changes caused by the molecules self-assembled colloidal aggregation. Temperature and salinity affect their rheology and flow properties. In this study, both rheological and viscoelastic properties for the optimum concentration, 4%, of Aromox® APA-T viscoelastic surfactant (VES) were investigated using two brine solutions; 2 and 4% KCl and wide range of temperatures (72°F – 200°F). Flow properties were examined using a 1/2-in. straight and coiled tubing (CR = 0.019). The results show that increasing solution salinity promotes formation of rod-like micelles and increases its flexibility. Salinity affects micelles growth and their rheological and viscoelastic behavior is very sensitive to the nature and structure of the added salt. Different molecular structures are formed; spherical micelles occur first and then increased temperature and/or salinity promotes the formation of rod-like micelles. Later, rod-like micelles are aligned in the flow direction and form a large super ordered structure of micellar bundles or aggregates called shear induced structure (SIS). Different structures implies different rheological and flow properties. Likewise, rheology improves with increasing temperature up to 100°F. Further increase in temperature reverses the effects and viscosity decreases. In addition, drag reduction and flow characteristics of SB fluids are improved by the addition of salt and/or increasing temperature up to 100°F. Results obtained are in full agreement with rheological and viscoelastic behavior of SB fluids for both salinity and temperature.
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Petit, C., Th Zemb, and M. P. Pileni. "Gelation of reverse micelles." In The living cell in four dimensions. AIP, 1991. http://dx.doi.org/10.1063/1.40569.

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Kamel, Ahmed H. "Rheological Characteristics of Surfactant-Based Fluids: A Comprehensive Study." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86044.

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Surfactant-based fluids, SB fluids exhibit complex rheological behavior due to substantial structural change caused by the molecules self-assembled colloidal aggregation. Various factors affect their rheological properties. Among these factors, surfactant concentration, shear rate, temperature, and salinity are investigated. One of the most popular surfactants, Aromox® APA-T viscoelastic surfactant (VES) is examined. The study focuses on four different concentrations (1.5%, 2%, 3%, and 4%) over a shear rate ranging from 0.0526 sec−1 to 1944 sec−1 using Bohlin rheometer. For salinity effects, two brine solutions are used; 2 and 4% KCl while for temperature effects, a wide range from ambient temperature of 72°F up to 200°F is covered. The results show that SB fluids exhibit a complex rheological behavior due to its unique nature and the various structures form in the solution. In general, SB fluids at all concentrations exhibit a non-Newtonian pseudo-plastic shear thinning behavior. As the surfactant concentration and/or shear increases, a stronger shear thinning behavior can be seen. Increasing solution salinity promotes formation of rod-like micelles and increases its flexibility. Salinity affects micelles’ growth and their rheological behavior is very sensitive to the nature and structure of the added salt. Different molecular structures are formed; spherical micelles occur first and then increased shear rate and/or salinity promotes the formation of rod-like micelles. Later, rod-like micelles are aligned in the flow direction and form a large super ordered structure of micellar bundles or aggregates called shear induced structure (SIS). Different structures implies different rheological properties. Likewise, rheology improves with increasing temperature up to 100°F. Further increase in temperature reverses the effects and viscosity decreases. However, the effects of temperature and salinity diminish at higher shear rates. Furthermore, a rheology master curve is developed to further understand the rheological behavior of SB fluids and correlate rheological properties to its microscopic structure.
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Pang, Yoonsoo, Zhaohui Wang, John C. Deàk, and Dana D. Dlott. "Vibrational energy transfer in reverse micelle molecular nanostructures." In Laser Science. Washington, D.C.: OSA, 2005. http://dx.doi.org/10.1364/ls.2005.lwc2.

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Dhami, Suman, Juan J. Cosa, Steven M. Bishop, Mary S. C. Simpson, and David Phillips. "Photophysics of sulphonated aluminum phthalocyanines in reversed micelles." In Europto Biomedical Optics '93, edited by Giulio Jori, Johan Moan, and Willem M. Star. SPIE, 1994. http://dx.doi.org/10.1117/12.168691.

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Shri Prasad, S., M. Dinesh Raja, and J. Madhavan. "Synthesis of Cds quantum dots by reverse micelle method." In 2013 International Conference on Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET). IEEE, 2013. http://dx.doi.org/10.1109/icanmeet.2013.6609227.

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Dutta, P., M. Jakupca, L. Salvati, K. Reddy, and R. Ansari. "Synthesis of microporous materials in reverse micelles." In 32nd Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-569.

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Carnahan, N. F., and L. Quintero. "On Reversed Micelles, Supercritical Solutions, EOR and Petroleum Reservoirs." In SPE Latin America Petroleum Engineering Conference. Society of Petroleum Engineers, 1992. http://dx.doi.org/10.2118/23753-ms.

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Crompton, D., and A. Vickers. "Low frequency dynamics of water in reverse micelle sugar solutions." In 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2012). IEEE, 2012. http://dx.doi.org/10.1109/irmmw-thz.2012.6380120.

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Reports on the topic "Reversed micelle"

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Pfund, D. M., and J. L. Fulton. Small angle X-ray scattering studies of reverse micelles in supercritical fluids. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/28247.

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Skinner, James. SISGR: Water dynamics in heterogeneous and confined environments: Salt solutions, reverse micelles, and lipid multi-bilayers. Office of Scientific and Technical Information (OSTI), November 2013. http://dx.doi.org/10.2172/1104482.

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