Автор: Shashi Thutupalli Название: Towards Autonomous Soft Matter Systems ISBN: 3319346121 ISBN-13(EAN): 9783319346120 Издательство: Springer Рейтинг: Цена: 13059.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book describes results from minimal, biomimetic systems and primarily investigates membranes and active emulsions, as well as key aspects of both soft matter and non-equilibrium phenomena.
Автор: Johan Sjoblom Название: Emulsions and Emulsion Stability, Second Edition ISBN: 0824726952 ISBN-13(EAN): 9780824726959 Издательство: Taylor&Francis Рейтинг: Цена: 31390.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Offers comprehensive coverage of both theoretical and practical aspects of emulsions. This book presents fundamental concepts and processes in emulsified systems, such as flocculation, stability, and coalescence as well as advanced concepts such as inversion in emulsion systems, spontaneous emulsification, and formation of nanoemulsions.
Автор: Tharwat F. Tadros Название: Emulsions: Formation, Stability, Industrial Applications ISBN: 3110452170 ISBN-13(EAN): 9783110452174 Издательство: Walter de Gruyter Цена: 11148.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Chapter 1 General IntroductionDefinition 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 BreakdownApplication 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 DropletsVan 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 InterfaceThermodynamic 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 EmulsifierDescription 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 EmulsificationPipe 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 EmulsifiersThe 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 preventionDriving 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 PreventionFactors 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 ReductionFactors 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 PreventionDriving 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 PreventionDistinction 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 EmulsionsMeasurement 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 Emulsions14.1 Application in Pharmacy14.2 Application in Cosmetics 14.3 Application in Agrochemicals14.4 Application in Paints14.5 Application in the Oil Industry
Автор: Langevin Dominique Название: Emulsions, Microemulsions and Foams ISBN: 3030556808 ISBN-13(EAN): 9783030556808 Издательство: Springer Цена: 18167.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: 1. Common background (about 100 pages) 1.1 Interfaces between pure fluids
- Surface pressure, surface rheology (compression and shear, viscoelasticity)
- Polymer layers: thickness, rheology, case of proteins
- Other species: asphaltenes, particles
- Mixed layers
1.3. Surfactant layers
- Adsorption-desorption: Gibbs description, validity of the Gibbs equation, Langmuir equation of state, energy barriers, depletion.
- Non-equilibrium systems: sorption and transfer kinetics, "dynamic" tension
- Surface rheology: extension of Gibbs description, resistance to compression and shear, viscoelasticity, Levich model, influence of the surface charge
1.4 Thin films: Interaction between surfaces (van der Waals, electrostatic, short range), disjoining pressure. Oscillatory forces, film stratification
1.5 Surfactants and self-associated systems: micelles, lyotropic liquid crystals,
- Surfactant parameter, link with HLB, HLD and PIT
- Critical micellar concentration, link with surfactant solubility, exchanges with bulk
- Micelle size distribution, micelles in organic solvents
3. Emulsions and foams (about 130 pages) 3.1 Emulsion and foam structures, analogies between high internal phase emulsions (HIPE) and foams, monodisperse dispersions
3.2 Foaming and emulsification: methods, control of drop/bubble size
3.3 Foam and emulsion rheology
- Wall slip
- Soft solid behavior, rejuvenation
- Link with structural reorganisation processes, the jamming transition
- Role of interfacial rheology
3.4 Foam and emulsion stability
- Sedimentation/creaming of emulsions: influence of surface rheology, influence of surfactant concentration and of drop volume fraction. Foam drainage, case of HIPEs
Introduction.- Selection of Operating Parameters.- Applications of Ultrasonic Emulsification.- Mechanisms of Ultrasonic Emulsification.- Influence of Gas Content.- Ultrasonic Frequency.- Delivery of Anti-Cancer Drugs.- Future Trends and Outlook.- References.
Описание: Thus, the concept and technologies of stabilization ofphotographic silver halide materials have been expanded so extensively that many photographic scientists and engineers eagerly want a reliable, new reference book on the stabilization of photographic emulsions.
Автор: J.F. Sadoc; N. Rivier Название: Foams and Emulsions ISBN: 0792356160 ISBN-13(EAN): 9780792356165 Издательство: Springer Рейтинг: Цена: 43184.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This text provides 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.
Описание: Characterization of Liquids, Dispersions, Emulsions and Porous Materials Using Ultrasound, Third Edition, presents a scientific background for novel methods of characterizing homogeneous and heterogeneous liquids (dispersions, emulsions, and gels) as well as porous materials. Homogeneous liquids are characterized in rheological terms, whereas particle-size distribution and zeta potential are parameters of heterogeneous liquids. For porous materials, porosity, pore size, and zeta potential are output characteristics. These methods are based on ultrasound, which opens an opportunity for simplifying the sample preparation by eliminating dilution. This in turn, makes measurements faster, easier, precise, suitable for accurate quality control, PAT, and formulation of complex systems. . This book provides theoretical background of acoustics, rheology, colloid science, electrochemistry, and other relevant scientific fields, describing principles of existing instrumentation and, in particular, commercially available instruments. Finally, the book features an extensive list of existing applications. .
Автор: Johan Sj?blom Название: Emulsions ISBN: 9401050856 ISBN-13(EAN): 9789401050852 Издательство: Springer Рейтинг: Цена: 12157.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Proceedings of the NATO Advanced Research Workshop, Bergen, Norway, June 24-25, 1991
Описание: This monograph is a follow-up to the first FRPPP book by Gerard Caneba. It includes additional conceptual results, implementation of the FRRPP process in emulsion media to produce various block copolymers, and other FRRPP-related supplementary topics.
Автор: Shunmugaperumal Tamilvanan Название: Oil-In-Water Nanosized Emulsions for Drug Delivery and Targeting ISBN: 1119585228 ISBN-13(EAN): 9781119585220 Издательство: Wiley Рейтинг: Цена: 31514.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This volume is a guide for scholars, policymakers, attorneys, teachers, judges, and students interested in the theories, policies, and doctrines of copyright law. Featuring experts from around the world, the handbook offers a systematic, comparative study of copyright in major jurisdictions including the United States, the European Union, and China.
Автор: Sjoblom, Johan Название: Encyclopedic Handbook of Emulsion Technology ISBN: 0824704541 ISBN-13(EAN): 9780824704544 Издательство: Taylor&Francis Рейтинг: Цена: 26796.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
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