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Microstructure Rheology And Dynamics Of Colloidal Particles In A Model Self Assembled Surfactant Solution
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Book Synopsis Microstructure, Rheology, and Dynamics of Colloidal Particles in a Model, Self-assembled Surfactant Solution by : Kenneth D. Smith
Download or read book Microstructure, Rheology, and Dynamics of Colloidal Particles in a Model, Self-assembled Surfactant Solution written by Kenneth D. Smith and published by . This book was released on 2003 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Surfactant Self-Assemblies by : Raoul Zana
Download or read book Dynamics of Surfactant Self-Assemblies written by Raoul Zana and published by CRC Press. This book was released on 2005-03-30 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Surfactant Self-Assemblies explains the dynamics of micellar equilibria, tracking surfactant exchange, and micelle formation/breakdown processes. Highlighting the structural similarities of amphiphilic block copolymers to surfactants, this volume elucidates the dynamics of more complex self-assemblies that surfactants and amphiphilic bl
Book Synopsis Wormlike Micelles by : Cecile A Dreiss
Download or read book Wormlike Micelles written by Cecile A Dreiss and published by Royal Society of Chemistry. This book was released on 2017-03-21 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wormlike Micelles describes the latest developments in the field including new systems, characterization and applications.
Book Synopsis Interfacial Self-assemblies of Surfactants at Water-oil Interfaces by : Houman Honaryar
Download or read book Interfacial Self-assemblies of Surfactants at Water-oil Interfaces written by Houman Honaryar and published by . This book was released on 2021 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The generation of novel synthetic materials with functionality and hierarchical ordering is a major focus of current studies in materials science and engineering. Self-assembling amphiphilic materials (such as lipids or surfactants) are an important subgroup of colloids and soft matter and are being used as an ideal candidate for such purposes due to quickly forming rich supramolecular structures across nanometer and micrometer length scales. The immiscible liquid-liquid interfaces which are constrained environment have proved to offer ideal platforms for such endeavors where surface-active nanoparticles or molecules can accumulate and self-assemble. In this thesis, we focus on self-assembly of surfactants which induce formation of nano- or microstructures at the interface between the aqueous solution of a surfactant (ionic or non-ionic) and a polar oil (such as oleic acid). First, self-assembly of different types of surfactants (ionic vs. non-ionic) at immiscible water-oil interface is used for the newly emerged liquid-in-liquid 3D printing. In this printing approach, the aqueous solution of surfactants and the oil constitute the printing phase and support liquid, respectively. Considering the low viscosity of aqueous solutions, the printed liquid constructs using this technique are significantly well-defined and relatively complex in shape. Interfacial rheology is utilized to understand viscoelastic properties of the interfacial layer made between the surfactant solution and oil phase. This gel-like material formed at the interface is robust enough that makes the printed liquid construct perfusable, enabling an injected solution to flow within its structure without any change in the shape and integrity of print. The kinetics of aggregate formation at the water-oil interface is also studied in two cases; when aqueous solution is stagnant (static) and in contact with oil phase and when the aqueous solution is flowing (dynamic) over oil phase. Then relevant models are established for these two conditions and the key aspects of formation of such structures are discussed. According to the proposed models, estimates for solubilization rate of oleic acid into aqueous solution are measured for both dynamic and static conditions. Subsequently, a computational simulation (dissipative particle dynamics) is performed to study the self-assembly behavior of each component (i.e. a cationic surfactant and a polar oil) in water. These self-assemblies behaviors are validated successfully based on the other experimental or simulation studies. Finally, mesoscopic simulation of water-oil interface with presence of all three components (surfactants/oil/water) provides us with an insight into dynamics and the underlying morphological pathway for the structure formation. The significance of this work lies in the printing of low viscous solutions of self-assembling materials into relatively complex designs which is enabled by surfactant self-assemblies and can be of use in various applications such as fabrication of liquid electronics and novel media for encapsulation of cells. This printing approach can be easily applied for different types of surfactants (ionic and non-ionic), block copolymers, biocompatible surfactants, peptides, or proteins. With having relevant kinetic modeling coupled with validated computational simulation of the system, one will be able to tailor desired microstructured materials and properties by tuning the type and concentration of constituent components, and dynamics of the system (i.e. flow rate of aqueous solution).
Book Synopsis Encyclopedia of Colloid and Interface Science by : Tharwat Tadros
Download or read book Encyclopedia of Colloid and Interface Science written by Tharwat Tadros and published by Springer. This book was released on 2013-06-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative and comprehensive reference relevant to all scientists and engineers in the field. This encyclopedia not only helps chemistry, materials science and physics researchers to understand the principles, but also provides practicing engineers with the necessary information for implementing practical applications, such as Food and agrochemicals Polymers and ceramics Cosmetics and detergents Paints and coatings Pharmaceuticals and drug delivery In addition, the encyclopedia is an important reference for industrial chemists and chemical engineers faced with a multitude of industrial systems of a colloidal nature. As wide as the range of applications that colloid and interface science has is the range of scientific disciplines that contribute to research and development in this field. These encompass chemistry, physics, biology and mathematics as well as nanoscience and nanotechnology. The encyclopedia provides easy-to-digest information for meeting these interdisciplinary challenges. While providing numerous concise definitions of key terms, the encyclopedia also features more than forty in-depth essays on topics ranging from Agrochemical Formulations to Zeta Potential. All entries are cross-referenced and include selected references to original literature as well as synonyms.
Book Synopsis Surfactants and Macromolecules by : Björn Lindman
Download or read book Surfactants and Macromolecules written by Björn Lindman and published by Progress in Colloid and Polyme. This book was released on 1990 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstructure and Rheology of Mixed Ionic Surfactants by : Kate R. Hollabaugh
Download or read book Microstructure and Rheology of Mixed Ionic Surfactants written by Kate R. Hollabaugh and published by ProQuest. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Personal care products are complex blends of several surfactants which are typically anionic, zwitterionic and nonionic. Formulations are often created with little understanding of the interactions between these different types of surfactants. Here a model system comprised of sodium dodecyl sulfate (SDS), sodium lauryl ether sulfate (SLES), and cocomonoethanolamide (CMEA) represents the industrial surfactant blend almeo. The effect of the addition of a zwitterionic surfactant, tegobetaine, to this blend was investigated. An understanding of the phase behavior of the four component mixture was gained by building up the complexity of the mixture one surfactant at a time. Nested ternary and pseudo-ternary phase maps were created to determine the phase boundary for the dilute one phase isotropic region that is useful for formulation. The nonionic surfactant in almeo, CMEA, greatly affected the overall phase behavior of the mixture, decreasing the one phase isotropic region of phase space. Small angle neutron scattering (SANS) was used to probe the microstructures present in the dilute one phase region and to understand the structural evolution that occurs upon addition of tegobetaine. The effect of these structural parameters on the bulk solution properties was established using rheology. Rheology was also used to characterize the dynamics and material properties of the wormlike micelle solutions that exist at higher surfactant concentrations. Wormlike micelle (WLM) solutions of sufficient length and concentration will entangle, which leads to viscoelasticity. Alternatively, branching can lead to the formation of a viscoelastic network. The viscoelasticity of these WLM solutions makes them relevant from a wide range of applications ranging from personal care products to oil drilling. Scaling relationships for properties of WLM exist, which are useful in product development. However, these relationships were developed for linear entangled micelles, not branched networks, and the effect of branching is unknown. Here neutron spin echo (NSE) was used to gain a better understanding of the dynamics of both entangled and branched WLM solutions and how they relate to the bulk and network properties.
Book Synopsis Self-Organized Surfactant Structures by : Tharwat F. Tadros
Download or read book Self-Organized Surfactant Structures written by Tharwat F. Tadros and published by John Wiley & Sons. This book was released on 2011-10-05 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlighting recent developments as well as future challenges, this series of volumes 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.
Book Synopsis Theory and Applications of Colloidal Suspension Rheology by : Norman J. Wagner
Download or read book Theory and Applications of Colloidal Suspension Rheology written by Norman J. Wagner and published by Cambridge University Press. This book was released on 2021-04-15 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential text on the practical application and theory of colloidal suspension rheology, written by an international coalition of experts.
Book Synopsis Charged Colloidal Particles in Nonpolar Solvents and Self-assembled Colloidal Model Systems by : Ming F. Hsu
Download or read book Charged Colloidal Particles in Nonpolar Solvents and Self-assembled Colloidal Model Systems written by Ming F. Hsu and published by . This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Testing of Mesoscale Models of Industrial Surfactants by Dissipative Particle Dynamics by : Runfang Mao
Download or read book Design and Testing of Mesoscale Models of Industrial Surfactants by Dissipative Particle Dynamics written by Runfang Mao and published by . This book was released on 2016 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissipative particle dynamics simulation with novel model is applied to predict aggregation in ionic surfactants. Anionic surfactant sodium dodecyl sulfate (SDS) and cationic surfactant cetyl trimethyl ammonium bromide (CTAB) are chosen as characteristic examples. Coarse-grained models are constructed from infinite dilution activity coefficient in reference solutions and atomistic simulations. Ionic groups are modeled as beads with charges distributed around the bead centers and placed in implicit dielectric medium. The model of ionic surfactant semi-quantitatively reproduces the dependence of self-assembly in solutions of CTAB and SDS on surfactant concentration, the molarity of added electrolyte. In particular, the decline of the free surfactant concentration with increasing total surfactant loading, as well as the aggregation transition in single-component surfactant cause by salt addition are predicted correctly. Addition of CTAB to a micellar solution of SDS causes a transition to worm-like micelles and then to mini-vesicles. This systematic methodology has been further extended to carbopol system. A stable carbopol film has been observed after equilibrium based on this model. Further investigation to study rheology of surfactant-carbopol system are required in future work, like add surfactant into this system.
Book Synopsis Surfactants and Macromolecules: Self-Assembly at Interfaces and in Bulk by :
Download or read book Surfactants and Macromolecules: Self-Assembly at Interfaces and in Bulk written by and published by Steinkopff. This book was released on 2014-03-12 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rheology and Microstructure of Concentrated Suspensions of Plate Shaped Colloidal Particles by : Suzanne Michelle Jogun
Download or read book Rheology and Microstructure of Concentrated Suspensions of Plate Shaped Colloidal Particles written by Suzanne Michelle Jogun and published by . This book was released on 1998 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colloidal Suspension Rheology by : Jan Mewis
Download or read book Colloidal Suspension Rheology written by Jan Mewis and published by Cambridge University Press. This book was released on 2012 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented in an accessible and introductory manner, this is the first book devoted to the comprehensive study of colloidal suspensions.
Download or read book Food Colloids written by Eric Dickinson and published by . This book was released on 1997 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides very broad coverage of the subject and will prove essential reading for graduates and researchers in all areas of food science, surface and colloid science.
Book Synopsis Investigation of Relationships Among Microstructure, Rheology, Drag Reduction and Heat Transfer of Drag Reducing Surfactant Solutions by : Yunying Qi
Download or read book Investigation of Relationships Among Microstructure, Rheology, Drag Reduction and Heat Transfer of Drag Reducing Surfactant Solutions written by Yunying Qi and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Drag reducing (DR) surfactant solutions can reduce pumping energy requirements in district heating and cooling (DHC) systems by 30-60%. To enhance the heat transfer ability of DR surfactant solutions, three methods were investigated. Fluted tube-in-tube heat exchangers and installing destructive devices at heat exchanger entrances were found to be very effective with moderate pressure drop penalties. The former is good for new DHC systems while the latter is ideal for existing DHC systems. Ultrasonic energy break up surfactant microstructures and enhance their heat transfer ability was effective for viscoelastic drag reducing surfactant solutions. The destructive devices and ultrasonic energy temporarily destroy the surfactant microstructure which enhances heat transfer. The microstructure recovers quickly and the solution regains its DR ability downstream of the exchanger. Unsaturated hydrocarbon chains with cis and trans configurations with different counterion/surfactant ratios influence the effective DR temperature range of cationic surfactant solutions, their shear degradation, their rheological behavior and their microstructures. Shearing effects on the microstructures of different DR surfactant solutions were studied using SANS. Surfactant microstructures aligned along the flow direction under shear. However, the critical shear rate for the initiation of alignment depends on surfactant microstructure. Differences and their relation to rheological properties and DR abilities are discussed. Shear induced structures (SIS) are accompanied by first normal stress difference (N1). Non-viscoelastic DR systems do not show SIS and N1. Threadlike micelle structures appear to be present in all DR surfactant solutions under shear, however. While some DR surfactant solutions have low extensional/shear viscosity ratios at extensional rates
Book Synopsis Fluid Interfaces by : Eduardo Guzmán
Download or read book Fluid Interfaces written by Eduardo Guzmán and published by MDPI. This book was released on 2021-03-02 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid interfaces are promising candidates for confining different types of materials, e.g., polymers, surfactants, colloids, and even small molecules, to be used in designing new functional materials with reduced dimensionality. The development of such materials requires a deepening of the physicochemical bases underlying the formation of layers at fluid interfaces as well as on the characterization of their structures and properties. This is of particular importance because the constraints associated with the assembly of materials at the interface lead to the emergence of equilibrium and features of dynamics in the interfacial systems, which are far removed from those conventionally found in traditional materials. This Special Issue is devoted to studies on the fundamental and applied aspects of fluid interfaces, and attempts to provide a comprehensive perspective on the current status of the research field.
