Download or read book The Ultracentrifugation of Oil in Water Emulsions written by Robert Cornelis Groot and published by . This book was released on 1965 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ultracentrifugation of Oil in Water Emulsions Proefschrift Etc With a Summary in Dutch written by Robert Cornelis GROOT and published by . This book was released on 1965 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ultracentrifugation of Oil in Water Emulsions Proefschrift written by Robert Cornelis Groot and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory and Practice of Emulsion Technology written by A.L. Smith and published by Elsevier. This book was released on 2012-12-02 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory and Practice of Emulsion Technology covers the proceedings of the Theory and Practice of Emulsion Technology Symposium, held at Brunel University on September 16-18, 1974. This book is organized into four sessions encompassing 19 chapters. The opening session deals with the emulsification process and emulsion polymerization, as well as the adsorption behavior of polyelectrolyte-stabilized emulsions. The following session examines the rheological properties, stability, and fluid mechanics of emulsions. This session also looks into the role of protein conformation and crude oil-water interfacial properties in emulsion stability. The third session highlights the preparation, formation, properties, and application of bitumen emulsions. The concluding session describes the process of spontaneous emulsification; the steric emulsion stabilization; the interfacial measurements of oil-in-water emulsions; and the influence of the disperse phase on emulsion stability. This book will be of value to chemists, chemical and process engineers, and researchers.
Download or read book An In Depth Guide to Oil In Water Emulsions written by Carlos Bravo Diaz and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "When oil is dispersed in the form of droplets in water in the presence of a suitable surfactant, oil-in-water (O/W) emulsions are formed. They have unique chemical properties covering a wide range of applications from environmental technologies to foodstuffs. In this book, authors discuss the preparation of O/W emulsions and their implications in environmental and food problems, covering hot topics including the composition and spill behavior of diluted bitumens, the use of O/W emulsions as platforms for the synthesis of waterborne particles, new methods to separate oil from water in oily wastewater, emerging technologies for the preparation of O/W emulsions, control of the oxidative status of lipids in oil by employing antioxidants to minimize lipid oxidation, parameters affecting O/W microbial stability and environmental issues and evaluation of interfacial barriers created by emulsifiers"--
Download or read book The Formation of Oil field Emulsions written by D. B. Dow and published by . This book was released on 1925 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Ultra High pressure Homogenization UHPH in the Production of Submicron nano oil in water Emulsions Using Vegetable Oils and Milk Proteins as Emulsifiers written by Essam Hassan Emam Hebishy and published by . This book was released on 2013 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of the present PhD thesis was to study some factors related to the choice of emulsifier (whey protein isolate or sodium caseinate) concentration, oil-phase volume fractions (10-50%) and homogenization conditions (100-300 MPa) that could influence physical stability and lipid oxidation in nano/submicron oil-in-water emulsions by using a rotor-startor system (colloidal mill, CM, at 5000 rpm for 5 min) for obtaining the coarse emulsions and stabilized by ultra high-pressure homogenization (UHPH), in comparison to conventional homogenization (CH, 15 MPa). Emulsions were characterized for their physical properties (droplet size distribution, microstructure, surface protein concentration, emulsifying stability against creaming and coalescence, and viscosity) and oxidative stability (hydroperoxide content and TBARs) under light (2000 lux/m2 for 10 days). The first study focused on using whey protein isolate (WPI) as emulsifier in different concentrations (1, 2 and 4%) with a fixed oil concentration (20%) of sunflower and olive oils (3:1). UHPH produced emulsions with lipid particles of small size in the sub-micron range (100-200 nm) and low surface protein with unimodal distribution in emulsions treated at 200 MPa using whey proteins at 4%. Long term physical stability against creaming and coalescence was observed in UHPH emulsions, compared to those obtained by CM and CH. Oxidative stability of emulsions was also improved by UHPH compared to CM and CH, especially when 100 MPa was applied. All emulsions exhibited Newtonian behavior (n ≈ 1). These results led us to use the best conditions obtained in the previous work (4% of protein concentration and pressure treatments of 100 and 200 MPa) to study the physical and oxidative stability of emulsions containing different oil-phase volume fractions (10, 30 and 50%). Increasing the oil concentration from 10 to 50%, in general, increased the particle size, decreased the surface protein concentration and resulted in a high degree of flocculation and coalescence, especially in emulsions treated at 200 MPa. All UHPH emulsions, except those treated at 100 MPa containing 10% oil, and CH emulsions with 50% oil displayed an excellent stability vs. creaming during storage at ambient temperature. The lowest oxidation rate was observed in UHPH emulsions, especially those containing 30% oil. The third study was conducted on using sodium caseinate (SC) as emulsifier in different concentrations (1, 3 and 5%) with a fixed oil concentration (20%) of sunflower and olive oils (3:1). UHPH emulsions containing 1% protein presented a high particle size (especially in emulsions treated at 100 MPa) but increasing the protein content to 3 and 5% in UHPH emulsions reduced the particle size, and tended to change the rheological behaviour from Newtonian to shear thinning, improving the creaming and oxidative stabilities of emulsions. From the previous study, the best droplet breakdown, physical and oxidative stability were obtained with pressures in the range of 200 and 300 MPa and sodium caseinate (5%). Therefore, the objective of the last study was to evaluating the emulsions containing different oil-phase volume fractions (10, 20, 30 and 50%) treated by UHPH in the conditions above mentioned, in comparison to CH emulsions containing 1 and 5% SC. Increasing the oil content to 50% tended to produce emulsions with a gel structure such as a mayonnaise type product so, the results of this study focused only on emulsions containing 10, 20 and 30% oil. CM and CH emulsions containing 1% SC and different oil contents (10, 20 and 30%), exhibited a Newtonian flow behavior with a slow creaming rate, whereas the oxidation rate was faster in these emulsions. On the other hand, high degree of flocculation with a shear thinning behavior, higher creaming rates, but low oxidation rates were observed in CH emulsions containing 5%. UHPH-treated emulsions containing high oil contents (20 and 30%) exhibited excellent creaming stability, and with a shear thinning rheological behavior only in emulsions containing 30% oil. UHPH produced stable emulsions against oxidation, especially when high oil contents (20-30%) were used. Increasing the oil concentration from 10 to 30%, in general, resulted in an increase in the oxidative stability in all emulsions, except in CH emulsions containing 1% of SC. Emulsions produced by both whey protein (4%) and caseinate (5%), and treated by UHPH have a good physical stability to flocculation, coalescence and creaming and also high stability to lipid oxidation, opening a wide range of opportunities in the formulation of emulsions containing bioactive components with lipid nature.
Download or read book Oil in Water Nanosized Emulsions for Drug Delivery and Targeting written by Tamilvanan Shunmugaperumal and published by John Wiley & Sons. This book was released on 2020-10-29 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines emulsion knowledge into a single, comprehensive volume, ideal for professionals and students involved in the areas of pharmaceutical science who are looking to learn about this emergent research concept. Compiles the step-by-step investigations made concerning the potential of nanosized emulsions on both drug delivery and drug targeting areas by different group of scientists in various laboratories across the world Inverts the common nano-emulsions coverage trend of focusing on focused on the particulate system itself, instead exploring the way to turn nanosized emulsions as biomedical tool, as well as, treating the in vitro and in vivo aspects after administration Provides an overview of the current state-of-the art regarding the development of tocol emulsions, emulsion adjuvants in immunization research, oxygen-carrying emulsions (called as fluorocarbon emulsion) and emulsions for delivering drugs to nasal and topical (ocular and transdermal) routes
Download or read book Analytical Ultracentrifugation written by David Scott and published by Royal Society of Chemistry. This book was released on 2007-12-16 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical ultracentrifugation has become an increasingly important technique for monitoring the size and shape of biological macromolecules. Analytical Ultracentrifugation: Techniques and Methods contains contributions from experts in the field, bringing together the multitude of developments that have taken place in instrumentation and analysis over the past decade into a single volume. This book covers the latest methods in analysis along with an extensive introduction for the novice user. Analysis methods in both sedimentation velocity and sedimentation equilibrium are discussed at length. Protein, protein/DNA, membrane proteins and polymer systems are also explored, along with software developments and non-ideality.
Download or read book Separation of Crude Oil water Emulsions written by Konstantin Panoussopoulos and published by . This book was released on 1998 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Crude Oil in water Emulsions written by James Peter Giordano and published by . This book was released on 1986 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory and Practice of Emulsion Technology written by Alec L. Smith and published by . This book was released on 1976 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on the Separation of Water and Oil Emulsions Induced by High Power EM Field Exposure in the ISM Frequency Bands written by Jan Vrba and published by . This book was released on 2013-08-20 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concentration of Oil in water Emulsions by Cross flow Ultrafiltration written by Cara Campbell Hoisak and published by . This book was released on 1995 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The fluxes were compared to a gel polarization model which was based on shear-driven diffusion. The experimental fluxes were somewhat higher than the predicted fluxes, with better agreement for the 50 000 MWCO membrane." --
Download or read book A Study of Emulsification and of Oil in Water Emulsions written by Elsie Elaine Halstrom and published by . This book was released on 1935 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stability of Oil in Water Emulsions written by A. R. Lane and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emulsification Separation and Manipulation of Oil water Systems Using Condensation Electrocoalescence and Electrowetting written by Ingrid Fuller Guha and published by . This book was released on 2018 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the emulsification, separation, and manipulation of oil/water mixtures using a range of chemical, mechanical, and electrical techniques. Simply explained, this thesis reports new methods to emulsify oil and water using condensation, separate oil and water using low-voltage electrocoalescence, and manipulate oil and water using ultra low-voltage electrowetting. The emulsification method relies on condensation of one liquid phase onto another. As nanoscale droplets of water condense onto the surface of oil, they are submerged and stabilized in the oil by a surfactant in the oil phase. The concentration of surfactant and time of condensation determine the size and stability of the resulting emulsions. The separation method presented in this thesis redesigns the configuration of the standard electrocoalescence setup and the dielectric materials used. The design employs a surface configuration in place of a bulk configuration for electrocoalescence. Additionally, a high-K dielectric (hafnium oxide) is used in place of a hydrophobic low-K dielectric (e.g. a fluoropolymer). A thermodynamically stable nanoscale oil film-a lipid bilayer-forms on the surface of the hafnium oxide, effectively rendering the surface hydrophobic by buffering water drops from the surface and preventing pinning. This surface configuration coupled with the use of a high-K dielectric drastically reduces the voltage required to induce electrocoalescence. The method of manipulating oil and water presented in this thesis is the electrowetting of a water drop on bare silicon in an oil environment containing zwitterions. The zwitterions form a nanoscale lipid bilayer between the water drop and the silicon surface. This electrowetting system contains no deposited solid dielectrics, resulting in ultra low-voltage actuation of the electrowetting effect. This thesis presents the theory, experimental results, and discussion of the experimental results for each method of controlling water/oil mixtures.