Download or read book Transport in Complex Self assembled Surfactant Systems written by Wyatt Jacob Musnicki and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work is to advance the understanding of the diffusive transport of hydrophobic compounds (pharmaceuticals, nutraceuticals, flavors, pesticides, etc.) solubilized in microemulsions and the particles that carry them through solution and in fibrous media. The first focus of this research was to investigate the gradient-diffusion of charged anionic micelles in solution and a fibrous gel at moderate but dilute concentrations above the critical micelle concentration. Of particular interest were the effects of micelle, gel, and sodium chloride concentration on the micelle diffusivity. Holographic interferometry was used extensively to measure the micelle gradient-diffusion coefficient as a function of surfactant concentration at multiple sodium chloride and gel concentrations. The micelle diffusivity was shown to increase linearly with surfactant concentration at the two larger sodium chloride concentrations and all gel concentrations. In general, the strength of this effect increased with decreasing sodium chloride concentration and increased with gel concentration. This behavior is evidence of decreasing micelle-micelle electrostatic interactions with increasing sodium chloride concentrations, and increasing excluded volume effects and hydrodynamic screening with increasing gel concentration, respectively. The extrapolated, infinite-dilution diffusion coefficients and the rate at which the micelle diffusivity increased with surfactant concentration were compared with predictions of previously published theories in which the micelles are treated as charged, colloidal spheres and the gel as a Brinkman medium. The experimental data and theoretical predictions were in good agreement, particularly at the higher salt concentrations. The second focus of this work was to investigate the gradient-diffusion of hydrophobic compounds in microemulsions. Three solutes of increasing hydrophobicity were used and two different types of surfactants, one non-ionic and the other anionic, were investigated. The transport of the hydrophobic compounds within the microemulsions were tracked using holographic interferometry. For three of the solute-surfactant pairs, the measured interferometry patterns exhibited pseudo-binary features and the effective binary diffusion coefficient of the solutes was extracted from these patterns. The effective diffusion coefficient of one solute-surfactant pair was between the slowest diffusing component, the micelle, and the fastest diffusing component, the solute in water. The other measured effective diffusivities were either much smaller than the micelle diffusivity or much larger than the solute's diffusivity in water. For the remaining three solute-surfactant pairs, the interferometric patterns clearly demonstrated the transport of more than two components. For these, the effective binary diffusion coefficients could not be extracted. To improve on the pseudo-binary results and to account for the coupled transport of solute, a ternary multicomponent method was adapted for use with holographic interferometry. The ternary diffusivities: D11, D12, D21, and D22 were determined for all sets of solutes and surfactants. The value of D22 were found to be in all cases equal to the micelle diffusivity. The values of D11 were found to be less than the solute's diffusivity in water and to decrease as the solute's hydrophobicity increased. The values of D12 and D21 were found to depend in a complex manner with the solute's hydrophobicity and the type of surfactant used. Holographic interferometry was a useful tool for extracting complex information from the transport mechanisms of the solute and surfactant gradient-diffusion in micelles and microemulsions.
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.
Download or read book Transport Phenomena in Complex Fluids written by Teodor Burghelea and published by Springer Nature. This book was released on 2019-12-10 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough overview of transport phenomena in complex fluids, based on the latest research results and the newest methods for their analytical prediction and numerical simulation. The respective chapters cover several topics, including: a description of the structural features of the most common complex fluids (polymer and surfactant solutions, colloidal suspensions); an introduction to the most common non-Newtonian constitutive models and their relationship with the fluid microstructure; a detailed overview of the experimental methods used to characterise the thermophysical properties, bulk rheology, and surface properties of complex fluids; a comprehensive introduction to heat, mass, and momentum transport, and to hydrodynamic instabilities in complex fluids; and an introduction to state-of-the-art numerical methods used to simulate complex fluid flows, with a focus on the Smoothed Particle Hydrodynamics (SPH) and the Dissipative Particle Dynamics (DPD) techniques. Subsequent chapters provide in-depth descriptions of phenomena such as thermal convection, elastic turbulence, mixing of complex fluids, thermophoresis, sedimentation, and non-Newtonian drops and sprays. The book addresses research scientists and professionals, engineers, R&D managers and graduate students in the fields of engineering, chemistry, biology, medicine, and the applied and fundamental sciences.
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 0 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 block copolymers form in solutions. The book first discusses self-assembling processes taking place in aqueous surfactant solutions and the dynamic character of surfactant self-assemblies. The next chapter reviews methods that permit the study of the dynamics of self-assemblies. The dynamics of micelles of surfactants and block copolymers, solubilized systems, microemulsions, vesicles, and lyotropic liquid crystals/mesophases are reviewed successively. The authors point out the similarities and differences in the behavior of these different self-assemblies. Much emphasis is put on the processes of surfactant exchange and of micelle formation/breakdown that determine the surfactant residence time in micelles, and the micelle lifetime. The last three chapters cover topics for which the dynamics of surfactant self-assemblies can be important for a better understanding of observed behaviors: dynamics of surfactant adsorption on surfaces, rheology of viscoelastic surfactant solutions, and kinetics of chemical reactions performed in surfactant self-assemblies used as microreactors. Dynamics of Surfactant Self-Assemblies offers a unique and comprehensive review of the literature that exists on the dynamics of the various surfactant self-assemblies and a unified perspective on this topic. It provides researchers with a useful guide for the dynamics of the surfactant systems that they wish to investigate.
Download or read book Self Assembly written by Ramanathan Nagarajan and published by John Wiley & Sons. This book was released on 2019-01-07 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the state-of-the-art of the diverse self-assembly systems Self-Assembly: From Surfactants to Nanoparticles provides an effective entry for new researchers into this exciting field while also giving the state of the art assessment of the diverse self-assembling systems for those already engaged in this research. Over the last twenty years, self-assembly has emerged as a distinct science/technology field, going well beyond the classical surfactant and block copolymer molecules, and encompassing much larger and complex molecular, biomolecular and nanoparticle systems. Within its ten chapters, each contributed by pioneers of the respective research topics, the book: Discusses the fundamental physical chemical principles that govern the formation and properties of self-assembled systems Describes important experimental techniques to characterize the properties of self-assembled systems, particularly the nature of molecular organization and structure at the nano, meso or micro scales. Provides the first exhaustive accounting of self-assembly derived from various kinds of biomolecules including peptides, DNA and proteins. Outlines methods of synthesis and functionalization of self-assembled nanoparticles and the further self-assembly of the nanoparticles into one, two or three dimensional materials. Explores numerous potential applications of self-assembled structures including nanomedicine applications of drug delivery, imaging, molecular diagnostics and theranostics, and design of materials to specification such as smart responsive materials and self-healing materials. Highlights the unifying as well as contrasting features of self-assembly, as we move from surfactant molecules to nanoparticles. Written for students and academic and industrial scientists and engineers, by pioneers of the research field, Self-Assembly: From Surfactants to Nanoparticles is a comprehensive resource on diverse self-assembly systems, that is simultaneously introductory as well as the state of the art.
Download or read book Self Assembly Processes at Interfaces written by Vincent Ball and published by Academic Press. This book was released on 2018-02-13 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Assembly Processes at Interfaces: Multiscale Phenomena provides the conceptual and unifying view of adsorption, self-assembly, and grafting processes at solid–liquid and liquid–gas interfaces, also describing experimental methods where applicable. An invaluable resource for (post)-graduate students looking to bridge the gap between acquiring the field's existing knowledge and the creation of new insights, the book recalls fundamental concepts, giving rigorous, but first-principle-based, calculations and exercises, and showing how these concepts have been used in recent research articles. Readers will find guidelines on how best to start research in the field of surface chemistry with biological macromolecules and molecules able to undergo self-assembly process at interfaces in the presence of a liquid, along with discussions on the very fundamental aspects and applications using concepts of biomimetic chemistry. By highlighting the interdisciplinary aspects of the field of self-assembly at interfaces, the book is an ideal resource for chemical engineers, chemists, physicists, and biologists. In addition, important equations are demonstrated on the basis of fundamental concepts, and overly complex mathematical developments are avoided. - Presents an interdisciplinary work that is ideal for chemical engineers, chemists, physicists, and biologists - Provides a unifying view of the field, from fundamentals, to methods and applications - Includes concepts applicable at both solid–liquid and liquid–gas interfaces
Download or read book Integrated Chemical Processes in Liquid Multiphase Systems written by Matthias Kraume and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-06-21 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid multiphase processes represent a promising option for realizing novel, efficient, and sustainable production processes, as required for the transformation towards climate-neutral manufacturing processes. This volume presents the results obtained over twelve years in the DFG-funded collaborative project Transregio 63 “Integrated Chemical Processes in Liquid Multiphase Systems”. In an interdisciplinary approach to the design and operation of such processes, essential principles of Green Chemistry are realized, such as using long-chain olefins as model representatives of renewable raw materials, highly effi cient catalysts, and green solvents, linked with process optimization to improve energy and material efficiency. Experts from different fields addressed all steps of the development process, from the description of the reactions on the molecular level via thermodynamics and the design of efficient separation processes to the operation of entire miniplants for liquid multiphase production processes. Thus, the complete development chain from the first reaction-related investigations in the laboratory to the technological realization in miniplants with model-based control is demonstrated. Numerous methodological innovations are proposed and validated using several innovative phase systems (thermomorphic multiphase systems, microemulsion systems, Pickering emulsions) and homogeneously catalyzed reactions. Engineers and chemists from the chemical industry as well as advanced students and researchers will get valuable insights into the physico-chemical phenomena in chemical multiphase processes and benefit from recommendations concerning methods for the selection of phase systems and rapid model-based process development.
Download or read book Metallosurfactants written by Surinder K. Mehta and published by John Wiley & Sons. This book was released on 2022-05-31 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallosurfactants Provides up-to-date coverage of the synthesis, properties, and applications of metallosurfactants Metallosurfactants: From Fundamentals to Catalytic and Biomedical Applications is a thorough introduction to amphiphilic compounds that allow to incorporate metal ions in the surfactant system. This comprehensive reference and guide describes the fundamentals of metal surfactant complexes, highlights recent advances in the field, and explores current and future applications and research areas. Gradually progressing from basic to advanced topics, the authors first explain the classification and characterization of metallosurfactants before delving into more complex concepts and various catalytic, sensing, and biomedical applications. The book begins with coverage of the synthesis of metallosurfactants and their surface, interfacial, and aggregation behavior. Subsequent chapters discuss applications of metallosurfactants in areas such as drug delivery, molecular machines, transfection, nanoparticle synthesis, and carbon monoxide-releasing molecules (CORMs). Other topics include the use of metallosurfactants as catalysts in organic reactions, and as anticancer and antimicrobial agents in drug delivery and formulation. This unique reference Provides an overview of the structure-function relationship, synthesis methods, and characterization of metallosurfactants Reviews current trends in metallosurfactant development and research Examines the use of metallosurfactants in a wide range of reactions, including esterolytic reactions and hydrogen generation Discusses advanced applications of metallosurfactants, e.g. as nanoreactors for nanoparticle synthesis, non-viral transfection vectors, and sensors Metallosurfactants: From Fundamentals to Catalytic and Biomedical Applications is an excellent introduction to the growing field of metallosurfactant chemistry as well as a concise, highly useful reference for researchers and scientists in both academia and industry.
Download or read book Molecular Forces and Self Assembly written by B. W. Ninham and published by Cambridge University Press. This book was released on 2010 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Challenging the cherished notions of colloidal theory, Barry Ninham and Pierandrea Lo Nostro confront the scientific lore of molecular forces and colloidal science in an incisive and thought-provoking manner. Throughout the book, they question assumptions, unearth flaws and present new results and ideas. With mathematics kept to a minimum and historic facts and anecdotes woven through the text, this is a highly engaging and readable treatment for students and researchers in science and engineering." --Book Jacket.
Download or read book A Computational Study of Self assembled Surfactant Systems written by Daniel Thomas Allen and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surfactant Science and Technology written by Drew Myers and published by John Wiley & Sons. This book was released on 2020-08-04 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: A solid introduction to the field of surfactant science, this new edition provides updated information about surfactant uses, structures, and preparation, as well as seven new chapters expanding on technology applications. Offers a comprehensive introduction and reference of the science and technology of surface active materials Elaborates, more fully than prior editions, aspects of surfactant crystal structure as well as their effects on applications Adds more information on new classes and applications of natural surfactants in light of environmental consequences of surfactant use
Download or read book Reactions And Synthesis In Surfactant Systems written by John Texter and published by CRC Press. This book was released on 2001-06-26 with total page 927 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work offers a comprehensive review of surfactant systems in organic, inorganic, colloidal, surface, and materials chemistry. It provides practical applications to reaction chemistry, organic and inorganic particle formation, synthesis and processing, molecular recognition and surfactant templating. It also allows closer collaboration between synthetic and physical practitioners in developing new materials and devices.
Download or read book Self assembly written by Brian H. Robinson and published by IOS Press. This book was released on 2003 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains six sections. The first section covers general articles; then there is a section concentrating on novel systems and applications. This is followed by one that deals with a range of applications of polymers, surfactants and liquid crystals. This is followed by a section on advances in fundamental understanding. Then there is one on biological systems, and finally there is a section on micelle and vesicle systems, with particular emphasis on dynamic aspects. The contributors, including Physicists, Chemists, Biologists and Chemical Engineers, variously chose to write review-type articles, summaries of their own recent work in the field and its relevance in the general concept of self-assembly, specific short papers related to their particular presentation, or their own thoughts concerning the future development of their particular interest area. All these aspects are addressed in the book. The book covers research at the forefront of the subject, and it is expected to be a very useful addition to the literature in this important field.
Download or read book Multiscale Modeling of Particle Interactions written by Michael King and published by John Wiley & Sons. This book was released on 2010-03-30 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover how the latest computational tools are building our understanding of particle interactions and leading to new applications With this book as their guide, readers will gain a new appreciation of the critical role that particle interactions play in advancing research and developing new applications in the biological sciences, chemical engineering, toxicology, medicine, and manufacturing technology The book explores particles ranging in size from cations to whole cells to tissues and processed materials. A focus on recreating complex, real-world dynamical systems helps readers gain a deeper understanding of cell and tissue mechanics, theoretical aspects of multiscale modeling, and the latest applications in biology and nanotechnology. Following an introductory chapter, Multiscale Modeling of Particle Interactions is divided into two parts: Part I, Applications in Nanotechnology, covers: Multiscale modeling of nanoscale aggregation phenomena: applications in semiconductor materials processing Multiscale modeling of rare events in self-assembled systems Continuum description of atomic sheets Coulombic dragging and mechanical propelling of molecules in nanofluidic systems Molecular dynamics modeling of nanodroplets and nanoparticles Modeling the interactions between compliant microcapsules and patterned surfaces Part II, Applications in Biology, covers: Coarse-grained and multiscale simulations of lipid bilayers Stochastic approach to biochemical kinetics In silico modeling of angiogenesis at multiple scales Large-scale simulation of blood flow in microvessels Molecular to multicellular deformation during adhesion of immune cells under flow Each article was contributed by one or more leading experts and pioneers in the field. All readers, from chemists and biologists to engineers and students, will gain new insights into how the latest tools in computational science can improve our understanding of particle interactions and support the development of novel applications across the broad spectrum of disciplines in biology and nanotechnology.
Download or read book Conjugated Polymers And Oligomers Structural And Soft Matter Aspects written by Matti Knaapila and published by World Scientific. This book was released on 2017-12-12 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book identifies modern topics and current trends of structural and soft matter aspects of conjugated polymers and oligomers. Each chapter recognizes an active research line where structural perspective dominates research and therefore the book covers fundamental aspects of persistent conjugated polymer backbone, water soluble conjugated polyelectrolytes and surfactants, conjugated molecules and biomolecules and DNA and the advanced use of synchrotron radiation and electron microscopy to find out structural details in conjugated molecule films and devices as well as under ambient and extreme conditions.
Download or read book Colloid Chemistry I written by Markus Antonietti and published by Springer Science & Business Media. This book was released on 2003-04-23 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work on colloid chemistry is written for scientists and practitioners in the field at universities and in industry. Topics covered include colloids, polymers, organic chemistry and nanoparticles.
Download or read book Bottom Up Self Organization in Supramolecular Soft Matter written by Stefan C. Müller and published by Springer. This book was released on 2015-08-01 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the general concepts of self-organized spatio-temporal ordering processes. These concepts are demonstrated via prototypical examples of recent advances in materials science. Particular emphasis is on nano scale soft matter in physics, chemistry, biology and biomedicine. The questions addressed embrace a broad spectrum of complex nonlinear phenomena, ranging from self-assembling near the thermodynamical equilibrium to dissipative structure formation far from equilibrium. Their mutual interplay gives rise to increasing degrees of hierarchical order. Analogues are pointed out, differences characterized and efforts are made to reveal common features in the mechanistic description of those phenomena.
