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Emulsions And Emulsion Stability
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Book Synopsis Emulsions and Emulsion Stability by : Johan Sjoblom
Download or read book Emulsions and Emulsion Stability written by Johan Sjoblom and published by CRC Press. This book was released on 2005-11-21 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions and Emulsion Stability, Second Edition provides comprehensive coverage of both theoretical and practical aspects of emulsions. The book presents fundamental concepts and processes in emulsified systems, such as flocculation, coalescence, stability, precipitation, deposition, and the evolution of droplet size distribution. The bo
Book Synopsis Emulsion Formation and Stability by : Tharwat F. Tadros
Download or read book Emulsion Formation and Stability written by Tharwat F. Tadros and published by John Wiley & Sons. This book was released on 2013-06-04 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of emulsification techniques, their use in the production of nanoparticles for biomedical applications as well as application of rheological techniques for studying the interaction between the emulsion droplets is gathered in this reference work. Written by some of the top scientists within their respective fields, this book covers such topics as emulsions, nano-emulsions, nano-dispersions and novel techniques for their investigation. It also considers the fundamental approach in areas such as controlled release, drug delivery and various applications of nanotechnology.
Download or read book Emulsions written by Johan Sjöblom and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Bergen, Norway, June 24-25, 1991
Book Synopsis Emulsions: Structure, Stability and Interactions by : Dimiter N. Petsev
Download or read book Emulsions: Structure, Stability and Interactions written by Dimiter N. Petsev and published by Elsevier. This book was released on 2004-10-14 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions: Structure, Stability and Interactions is the perfect handbook for scientists looking to obtain up-to-date knowledge about the fundamentals of emulsion science, and those looking to familiarize themselves with the subject in greater detail. As a ‘stand-alone’ source of information, it is also ideal for solving the practical issues encountered daily in the field of emulsion science. While each chapter presents a concise review on a specific topic, the book offers a consistent presentation of the important physical concepts relevant to emulsions. Some of the topics covered include statistical mechanics of fluid interfaces, the structure of fluid interfaces determined by neutron scattering, hydrodynamic interactions and stability of emulsion films, theory of emulsion flocculation, coalescence kinetics of Brownian emulsions, and Brownian dynamics simulation of emulsion stability. Full and comprehensive presentations Rigorous approach to each topic, providing in-depth information Acts as a 'stand-alone' source of information
Book Synopsis Modern Aspects of Emulsion Science by : Bernard P. Binks
Download or read book Modern Aspects of Emulsion Science written by Bernard P. Binks and published by Royal Society of Chemistry. This book was released on 1998 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions occur either as end products or during the processing of products in various areas, including the food, agrochemical, pharmaceutical, paint & oil industries. Despite over one hundred years of research in the subject, however, a quantitative understanding of emulsions has been lacking. Modern Aspects of Emulsion Science presents a comprehensive description of the scientific principles in the field & the very latest advances in research in this important area of surface & colloid science. Topics covered include emulsion formation, type, stability (creaming, flocculation, ripening, coalescence), monodisperse & gel emulsions, & applications. Emphasis has been placed on relating the chemistry of the surfactant or protein adsorbed at the oil-water interface to the principles of the physics involved in the bulk emulsion property. The book has been written by leading experts in the field & covers both experimental & theoretical approaches. The only book in print on this topic, it will prove essential reading for graduate students & researchers in industry. Contents: Emulsions - Recent Advances in Understanding.- Emulsion Formation.- Emulsion Formation by Nucleation & Growth Mechanisms.- Emulsion Flocculation & Creaming.- Rheology of Emulsions - The Relationship to Structure & Stability.- Phase Inversion & Drop Formation in Agitated Liquid-Liquid Dispersions in the Presence of Nonionic Surfactants.- Coalescence in Emulsions.- Lifetime & Destruction of Concentrated Emulsions Undergoing Coalescence.- Molecular Diffusion in Emulsions & Emulsion Mixtures.- Interactions & Macroscopic Properties of Emulsions & Microemulsions.- Gel Emulsions - Relationship between Phase Behaviour & Formation.- Applications of Emulsions.- Subject Index.
Download or read book Emulsions written by Tharwat F. Tadros and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-03-21 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1 General Introduction Definition of emulsions and the role of the emulsifier. Classification based on the nature of the emulsifier. Classification based on the structure of the system. General instability problems with emulsions : creaming/sedimentation, flocculation, Ostwald ripening, coalescence and phase inversion. Importance of emulsions in various industrial applications. Chapter 2 Thermodynamics of Emulsion Formation and Breakdown Application of the second law of thermodynamics for emulsion formation : Balance of energy and entropy and non-spontaneous formation of emulsions. Breakdown of the emulsion by flocculation and coalescence in the absence of an emulsifier. Role of the emulsifier in preventing flocculation and coalescence by creating an energy barrier resulting from the repulsive energies between the droplets. Chapter 3 Interaction Forces between Emulsion Droplets Van der Waals attraction and its dependence on droplet size, Hamaker constant and separation distance between the droplets. Electrostatic repulsion resulting from the presence of electrical double layers and its dependence on surface (or zeta) potential and electrolyte concentration and valency. Combination of the van der Waals attraction with double layer repulsion and the theory of colloid stability. Steric repulsion resulting from the presence of adsorbed non-ionic surfactants and polymers. Combination of van der Waals attraction with steric repulsion and the theory of steric stabilisation. Chapter 4 Adsorption of Surfactants at the Oil/Water Interface Thermodynamic analysis of surfactant adsorption and the Gibbs adsorption isotherm. Calculation of the amount of surfactant adsorption and area per surfactant molecule at the interface. Experimental techniques for measuring the interfacial tension. Chapter 5 Mechanism of Emulsification and the Role of the Emulsifier Description of the factors responsible for droplet deformation and its break-up. Role of surfactant in preventing coalescence during emulsification. Definition of the Gibbs dilational elasticity and the Marangoni effect in preventing coalescence. Chapter 6 Methods of Emulsification Pipe flow, static mixers and high speed stirrers (rotor-stator mixer). Laminar and turbulent flow. Membrane emulsification. High pressure homogenisers and ultrasonic methods. Chapter 7 Selection of Emulsifiers The hydrophilic-lipophilic-balance (HLB) and its application in surfactant selection. Calculation of HLB numbers and the effect of the nature of the oil phase. The phase inversion temperature (PIT) method for emulsifier selection. The cohesive energy ratio method for emulsifier selection. Chapter 8 Creaming/Sedimentation of Emulsions and its prevention Driving force for creaming/sedimentation: effect of gravity, droplet size and density difference between the oil and continuous phase. Calculation of the rate of creaming/sedimentation in dilute emulsions. Influence of increase of the volume fraction of the disperse phase on the rate of creaming/sedimentation. Reduction of creaming/sedimentation: Balance of the density of the two phases, reduction of droplet size and effect of addition of ''thickeners'. Chapter 9 Flocculation of Emulsions and its Prevention Factors affecting flocculation. Calculation of fast and slow flocculation rate. Definition of stability ratio and its dependence on electrolyte concentration and valency. Definition of the critical coagulation concentration and its dependence on electrolyte valency. Reduction of flocculation by enhancing the repulsive forces. Chapter 10 Ostwald Ripening and its Reduction Factors responsible for Ostwald ripening : difference in solubility between small and large droplets and the Kelvin equation. Calculation of the rate of Ostwald ripening. Reduction of Ostwald ripening by incorporation of a small amount of highly insoluble oil. Reduction of Ostwald ripening by the use of strongly adsorbed polymeric surfactant and enhancement of the Gibbs elasticity. Chapter 11 Emulsion Coalescence and its Prevention Driving force for emulsion coalescence : Thinning and disruption of the liquid film between the droplets. The concept of disjoining pressure for prevention of coalescence. Methods for reduction or elimination of coalescence : Use of mixed surfactant films, use of lamellar liquid crystalline phases and use of polymeric surfactants. Chapter 12 Phase Inversion and its Prevention Distinction between catastrophic and transient phase inversion. Influence of the disperse volume fraction and surfactant HLB number. Explanation of the factors responsible for phase inversion. Chapter 13 Characterisation of Emulsions Measurement of droplet size distribution : Optical microscopy and image analysis. Phase contrast and polarising microscopyDiffraction methods. Confocal laser microscopy. Back scattering methods Chapter 14 Industrial Application of Emulsions 14.1 Application in Pharmacy 14.2 Application in Cosmetics 14.3 Application in Agrochemicals 14.4 Application in Paints 14.5 Application in the Oil Industry
Book Synopsis Emulsion Science by : Jerôme Bibette
Download or read book Emulsion Science written by Jerôme Bibette and published by Springer. This book was released on 2003-07-01 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions occur either as end products or during the processing of products in a huge range of areas including the food, agrochemical, pharmaceuticals, paints and oil industries. As end products, emulsions allow to avoid organic solvent in processing hydrophobic coatings. Emulsion technology is a suitable approach to vehicle viscous phases. It is also a remarkable mean of targeting actives or capturing specific species. The range of applications of emulsions progresses and their manufacturing becomes more and more sophisticated. Besides this broad domain of technological interest, emulsions are raising a variety of fundamental questions at the frontier between physic and chem istry. Indeed, as a class of soft colloidal materials, emulsions science is linked to various aspects of these disciplines: phase transitions, surface forces and wetting, metastability and hydrodynamic instabilities, mechanical properties and flow. The aim of this book is to review the main important concepts governing emulsion science. In Chapter 2, repulsive interactions between liquid films are discussed as well as adhesive interaction related to wetting. In Chap ter 3, consequences of weak and strong attractions are presented, related to the well accepted liquid solid transition analogy. In Chapter 4, the basics of both bulk compressibility and shear elasticity are presented, the role of disorder being the most important aspect of the elastic behavior of these soft systems. In Chapter 5 the central question of the emulsion lifetime related to metastability is discussed.
Book Synopsis Science and Technology Behind Nanoemulsions by : Selcan Karakus
Download or read book Science and Technology Behind Nanoemulsions written by Selcan Karakus and published by BoD – Books on Demand. This book was released on 2018-08-22 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers new micro-/nanoemulsion systems in technology that has developed our knowledge of emulsion stability. The emulsion system is a major phenomenon in well-qualified products and has extensive usages in cosmetic industry, food industry, oil recovery, and mineral processes. In this book, readers will find recent studies, applications, and new technological developments on fundamental properties of emulsion systems.
Download or read book Emulsions written by Paul Becher and published by . This book was released on 1977 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: A great introduction to the study and fomulation of emulsions, this book discusses background theory, physical properties of emulsions, theories of emulsion stability and instability, emulsifying agents and their chemistry, formulation procedures and techniques, and industrial applications of emulsification and demulsification.
Download or read book Emulsions written by F. Horst Müller and published by Steinkopff. This book was released on 2007-12-19 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Practice of Emulsion Technology by : A.L. Smith
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.
Book Synopsis Food Emulsions by : David Julian McClements
Download or read book Food Emulsions written by David Julian McClements and published by CRC Press. This book was released on 2015-08-21 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuing the mission of the first two editions, Food Emulsions: Principles, Practices, and Techniques, Third Edition covers the fundamentals of emulsion science and demonstrates how this knowledge can be applied to control the appearance, stability, and texture of emulsion-based foods. Initially developed to fill the need for a single resource co
Download or read book Emulsions written by Tharwat F. Tadros and published by Walter de Gruyter GmbH & Co KG. This book was released on 2016-03-21 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions provides a general introduction, the industrial role of emulsifiers and addresses different problems such as creaming/sedimentation, flocculation, Ostwald ripening, coalescence and phase inversion. Thermodynamics, adsorption and interaction forces between emulsion droplets are thoroughly explained. Supplemented by many figures and tables, it helps to characterize and select the right emulsifier for various industrial applications.
Book Synopsis Nanoemulsions by : Seid Mahdi Jafari
Download or read book Nanoemulsions written by Seid Mahdi Jafari and published by Academic Press. This book was released on 2018-02-24 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoemulsions: Formulation, Applications, and Characterization provides detailed information on the production, application and characterization of food nanoemulsion as presented by experts who share a wealth of experience. Those involved in the nutraceutical, pharmaceutical and cosmetic industries will find this a useful reference as it addresses findings related to different preparation and formulation methods of nanoemulsions and their application in different fields and products. As the last decade has seen a major shift from conventional emulsification processes towards nanoemulsions that both increase the efficiency and stability of emulsions and improve targeted drug and nutraceutical delivery, this book is a timely resource. Summarizes general aspects of food nanoemulsions and their formulation Provides detailed information on the production, application, and characterization of food nanoemulsion Reveals the potential of nanoemulsions, as well as their novel applications in functional foods, nutraceutical products, delivery systems, and cosmetic formulations Explains preparation of nanoemulsions by both low- and high-energy methods
Book Synopsis Encyclopedia of Emulsion Technology by : Daniel Schuster
Download or read book Encyclopedia of Emulsion Technology written by Daniel Schuster and published by CRC Press. This book was released on 1985-08-05 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 4 of the Encyclopedia of Emulsion Technology completes this unique and compact 4-volume work by extending the discussion of basic theory and applications featured in Volumes 1-3. More importantly, this volume presents the latest developments on new applications in emulsion technology--introducing scientists and engineers to the most recent concepts. "
Book Synopsis Emulsions, Microemulsions and Foams by : Dominique Langevin
Download or read book Emulsions, Microemulsions and Foams written by Dominique Langevin and published by Springer Nature. This book was released on 2020-12-21 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes an interface science approach to describe and understand the behavior of the dispersions we call emulsions, microemulsions and foams. The one thing all these dispersions have in common is the presence of surface-active species (surfactants) adsorbed at the interfaces between the two fluid phases that make up the emulsions, microemulsions or foams. The interfacial layers formed by the surfactants control most of the properties of the dispersions. The book describes the properties of interfacial layers, thin films and bulk fluids used in the elaboration of the various dispersions and it explains how such properties relate to the dispersion properties of these soft matter systems: structure, rheology and stability. These dispersion properties are far from being fully understood, in particular foam and emulsion stability. In discussing the state of the art of the current knowledge, the author draws interesting parallels between emulsions, microemulsions and foams that enlighten the interpretation of previous observations and point to a deeper understanding of the behavior of these materials in the future.
Download or read book Foams and Emulsions written by J.F. Sadoc and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general and introductory survey of foams, emulsions and cellular materials. Foams and emulsions are illustrations of some fundamental concepts in statistical thermodynamics, rheology, elasticity and the physics and chemistry of divided media and interfaces. They also give rise to some of the most beautiful geometrical shapes and tilings, ordered or disordered. The chapters are grouped into sections having fairly loose boundaries. Each chapter is intelligible alone, but cross referencing means that the few concepts that may not be familiar to the reader can be found in other chapters in the book. Audience: Research students, researchers and teachers in physics, physical chemistry, materials science, mechanical engineering and geometry.
