Microemulsions is a term applied for a heterogeneous system consisting of at least three components. Background, new concepts, applications, perspectives. Many of the authors participated in a special symposium in melbourne, australia, honoring kash mittals 100th edited book at the 18th surfactants in solution sis meeting. Micelles, membranes, microemulsions, and monolayers william. The rapidly increasing number of applications for microemulsions has kept this relatively old topic still at the top point of research themes. In some respects, microemulsions can be considered as smallscale. Demonstrating methods for overcoming stability issues in paints, wax dispersions, cosmetics, food products, and other industrial applications, this reference probes theoretical and practical issues surrounding microemulsion science and technology. Dec 15, 2008 the effective use of microemulsions has increased dramatically during the past few decades as major industrial applications have expanded in a variety of fields. The heterogeneous system has two phases namely an oil phase and aqueous phase and third component as surfactants.
Visually, they are transparent or translucent, and their appearance does not change with time. This book focuses on the properties and applications of microemulsions and, in particular, on their interrelationship. Covering both the advances that have enabled improved understanding of microemulsions, and the applications in a range of industrial and research settings, and written by a first class team of contributors, this book will be essential reading for anyone using, or considering using microemulsions in the course of their work. Australian housewives have used since the beginning of last century watereucalyptus oilsoap flakewhite spirit mixtures to wash wool, and the first commercial microemulsions were probably the liquid waxes discovered by rodawald in 1928. A summary of recent research, the book eliminates the need to search through dozens of arcane online journal articles for critical information. Microemulsions are defined as clear or slightly turbid systems of lipophilic and hydrophilic phases, including surfactants and in most cases high amounts of cosurfactants. Microemulsions are clear, thermodynamically stable, isotropic liquid mixtures of oil, water, and surfactant, usually in combination with a cosurfactant kogan and garti, 2006. Microemulsions an introduction to properties and applications. It enables researchers in the field to follow a tested methodology in choosing the best sugar surfactant formulation that fits an application of interest. Properties and applications surfactant science book 144. Functional starch and applications in food springerlink. During the past five decades since the discovery of microemulsions by jack h.
Microemulsions are dispersions of two or more immiscible or partially miscible fluids stabilized by added surfactants. Microemulsions wiley online books wiley online library. These microemulsions can take different forms which include, among others, oil, water, and oilwater bicontinuous microemulsions. Properties and applications provides a complete and systematic assessment of all topics affecting. Microemulsions are one of the best candidates as novel drug delivery system because of their long shelf life, improved drug solubilization with ease of preparation and administration. A brief description of the applications of microemulsions in selected fields is given. Ppt microemulsions powerpoint presentation free to view. Formulation, solvency, and physical properties 400. The remainder of the coverage focuses on current and potential applications of microemulsions.
This book provides an assessment of some issues influencing the characteristics and performance of the microemulsions, as well as their main types of applications. Fills a void in the literature by presenting the basic concepts of microemulsions, essential to understanding their industrial significance, and comprehensive descriptions of the most useful commerical applications. Microemulsions consist of a combination of surfactants, cosurfactants, and oil phase and have demonstrated to be promising candidates due to its much higher solubilization capacity than. Basic aspects of microemulsion microemulsion are fluid, transparent, thermodynamically stable oil and water system and stabilized by a surfactant usually in conjunction with cosurfactant. The aqueous phase may contain salts andor other ingredients, and the oil may actually be a complex mixture of different hydrocarbons and olefins. The system can have a fourth variable component as cosurfactant. Sugar esters microemulsions covers recent advances in the formulation, characterization and applications of sugar esters microemulsions. Covering slowly digested starch, resistant starch, porous starch, starch microemulsions, microcrystalline starch and noncrystallization starch and their applications, this book provides a valuable reference for graduate students and research professionals in the food and chemical industries. Properties and applications surfactant science book 144 kindle edition by fanun, monzer. The physicochemical properties of microemulsions depend on the alkane carbon number, nature of cosurfactant and types of surfactants.
Until relatively recently, microemulsions were not used in large scale applications as their phase behaviour and microstructure were not well understood and large. Lekkerkerker thermodynamics of microemulsions ii, e. Microemulsions properties and applications monzer fanun. Until relatively recently, microemulsions were not used in large scale applications as their phase behaviour and microstructure were not well understood and large amounts of surfactant were needed for their formulation. Surface chemistry of surfactants and polymers wiley. The book examines commercial uses, including biocatalysis and enzymatic reactions, nutrition, the extraction of contaminated solids, pollution control, dispersion of drugs, and oil recovery. Compared with the traditional titration method drop method, the pdmpd method enables a more exact status description of mixtures in pseudo ternary diagrams. This book would be of interest to postgraduates and industry researchers in areas including healthcare, detergents, and finechemical production, and points the way to future research directions for this topic. Microemulsions are monodispersed spherical droplets diameter lt 100 nm of water in oil or oil in water, depending on the nature of the surfactant. Such a novel technique has considerable application in the fields of. Apart from being more commercially viable due to its lower energy requirements, microemulsions are also attracting the interest of researchers due to their potential as drug delivery vehicles, in 1 chandra, a1992. Book description based on the plenary and invited lectures presented at the international symposium on micelles, microemulsions, and monolayers. Historical perspective microemulsions a historical overview, b. Microemulsions prepared using ionic liquids and copper nanoparticles are some recent advances in this field 43, 44.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Microemulsions are thermodynamically stable, and their formation is facilitated by the ultralow interfacial tension of these systems, which leads to the formation of extremely small droplets of the dispersed phase. Charts the enormous advances that have occurred in the field over the past decade. This book provides an assessment of some issues influencing the characteristics and performance of the microemulsions, as well as their main. Discusses important issues related to enzymatic reactions and nanoparticle formation.
Microemulsions cosima stubenrauch bok 9781405167826 bokus. For formulation of microemulsions, different alkanes with carbon number from c 6 to c 18 are generally used. Each chapter contains a description of the fundamental phenomena and principles involved in microemulsion processes, emphasizing the mechanism of microemulsion formation and deformation. Microemulsions were probably discovered well before the studies of schulmann. Microemulsions are thermodynamically stable, fluid, and isotropically clear and may have droplets in the range of 5100 nm. About this book although first described by winsor in 1954, the chemistry and technology of microemulsions attracts considerable research interest. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Definition and history one of the best definitions of microemulsions is from danielsson and lindman 1 a microemulsion is a system of water, oil and an amphiphile which is a single optically isotropic and thermodynamically stable liquid solution. Preparation and evaluation of microemulsion systems.
An overview and pharmaceutical applications srini tenjarla associate director, shire pharmaceutical development inc, 1901, research boulevard, suite 500, rockville, md 20850. Winsors fundamental hypothesis on a natural interfacial curvature depending on the values of the formulation variables, this unique book shows scientists how to understand the intrinsic structure of these complex systems. Sugar esters microemulsions by monzer fanun overdrive. Download it once and read it on your kindle device, pc, phones or tablets. Microemulsions are transparent, thermodynamically stable, isotropic mixtures of oil and water stabilized by an interfacial film of surfactant molecules frequently in combination with a. Microemulsions are thermodynamically stable systems, whereas macroemulsions are kinetically stable systems. The progress of microemulsion research has taken place in welldefined stages. The dispersed domains are generally in the nanometer size range. This book comprehensibly covers a decade of experience on using sugar surfactants for various applications. The book examines commercial uses, including biocatalysis and enzymatic reactions, nutrition, the extraction of contaminated solids.
The global market for microemulsions has been divided on the basis of geography to provide a thorough overview of the market. Pdf download industrial applications of microemulsions. Microemulsions are defined as clear or slightly turbid systems of lipophilic and hydrophilic phases, including surfactants and in. Microemulsions are known to increase the drug absorption on topical application. Historical background definition composition of microemulsion major goals advantages disadvantages macroemulsion vs microemulsion types of microemulsions preparation methods of microemulsions equipments used for the preparation of microemulsions formation of microemulsion factors affecting. Sep 24, 2014 the unique properties of microemulsions differentiate them from ordinary emulsion. Numerous and frequentlyupdated resource results are available from this search. Microemulsions are considered to be thermodynamically stable.
Mar 03, 2009 a good overview of the area is presented. This book deals first with the commercial history of microemulsions, from the discovery of carnauba wax emulsions to polymer emulsions. Industrial applications of microemulsions book also available for read. Properties and applications provides a complete and systematic assessment of all topics affecting microemulsion performanc. This book covers the stateoftheart in stability, structure, applications, and dynamics representation of microemulsion systems. The droplet size of the dispersed phase in a microemulsion is less than 100 nm. As corrosion inhibitors, microemulsions may show many mechanisms of action. Ruckenstein microscopic models of microemulsions, g. Covered in this entry is an overview of the development and recent progress in electrochemical reactions in microemulsions, with an emphasis on fundamental properties and principles, and a discussion of some of the unique reactions systems that have been developed. They were used to solubilize drugs and to improve topical drug availability.
A potential novel drug delivery system jaspreet kaur saini 1, ujjwal nautiyal 1, senthil kumar m 1, devendra singh 2, firoz anwar 3 1department of pharmaceutics, himachal institute of pharmacy, paonta sahib, himachal pradesh, india. Microemulsion polymerization is a complex heterogeneous process where transport of monomers, free radicals and other species such as chain transfer agent, cosurfactant and inhibitors between the aqueous and organic phases, takes place. Microemulsions are mixtures of oil, surfactant, and water that form spontaneously. The objective of this work was to prepare and evaluate sa me systems.
A summary of recent research, the book eliminates the. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Microemulsions also have industrial applications, one of them being the synthesis of polymers. Salicylic acid sa is a keratolytic agent used in topical products with antimicrobial actions. Use features like bookmarks, note taking and highlighting while reading microemulsions. Of late, microemulsions have become a popular subject and applications are emerging rapidly.
Characterization of microemulsions prepared using isopropyl. Handbook of microemulsion science and technology by promod kumar, 9780824719791, available at book depository with free delivery worldwide. Sep 09, 2009 microemulsions mes are clear, thermodynamically stable systems. This book is divided into seven chapters that explore the physics and chemistry of microemulsions. Properties and applications provides a complete and systematic assessment of all topics affecting microemulsion performance and discusses the fundamental characteristics, t. Also, microemulsions are translucent and of low viscosity, while macroemulsions are opaque and of relatively high viscosity. In chapter 1 a short introduction about the background, various aspects and applications. Microemulsion systems are frequently used as lubricants. Starting with an introduction to surfactants the book then discusses their environmental and health aspects.
Abstract in the past twenty five years, microemulsions have been the focus of extensive research worldwide due to their importance in a. We use cookies to give you the best possible experience. The pdmpd method is an efficient and innovative approach that allows time and material savings while creating pseudo ternary phase diagrams for microemulsions and nanoemulsions. Although first described by winsor in 1954, the chemistry and technology of microemulsions attracts considerable research interest. A description of interest in them in the cosmetic field will follow section 29. This book gives the reader an introduction to the field of surfactants in solution as well as polymers in solution. Historical background definition composition of microemulsion major goals advantages disadvantages macroemulsion vs microemulsion types of microemulsions preparation methods of microemulsions equipments used for the preparation of microemulsions formation of microemulsion factors affecting microemulsion formation evaluation. As cutting oils, microemulsions serve as lubricants and absorbers of the heat of friction. Microemulsions market global industry analysis, size, share. Summary this book describes the microemulsion phenomenon in a systematic manner and not only provides an uptodate introduction to this topic but aslo serves as the basis for further development in the area. Tween 20, 40, 60, and 80 were used separately as surfactant with methanol, ethanol, 1propanol, 1butanol or 1pentanol as cosurfactant, and ipp as oil phase to prepare various microemulsions. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the. Handbook of microemulsion science and technology book. Theory and practice covers the development of the theory and practice of microemulsion systems.
Structure and dynamics crc press book this book describes the microemulsion phenomenon in a systematic manner and not only provides an uptodate introduction to this topic but aslo serves as the basis for further development in the area. Each chapter provides an overview of a specific research area, with discussions on past, present, and future directions. Microemulsions are thermodynamically stable and optically isotropic liquid solutions of oil, water and amphiphile. The effective use of microemulsions has increased dramatically during the past few decades as major industrial applications have expanded in a variety of fields. Friberg structural aspects and characterization of microemulsions thermodynamics of microemulsions i, w. Download industrial applications of microemulsions in pdf and epub formats for free. Microemulsions may be considered as critical solutions, not real emulsions. Among the regional segments, asia pacific is anticipated to hold a massive share of the global microemulsions market in the forecast period. The contributors also discuss the use of microemulsions as a reaction medium for the formation of polymeric and inorganic nanoparticles, and applications in electrokinetic chromatography. Reviews the progress achieved in the last 25 years and describes new directions for research on micellar, microemulsion, and monolayer systems and their technological potential.
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