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Interactions In Mixed Colloidal Systems Containing Spherical Silica Particles And Polymer Molecules
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Book Synopsis Interactions in Mixed Colloidal Systems Containing Spherical Silica Particles and Polymer Molecules by : Huibert de Hek
Download or read book Interactions in Mixed Colloidal Systems Containing Spherical Silica Particles and Polymer Molecules written by Huibert de Hek and published by . This book was released on 1981 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions in mixed colloidal systems containing spherical si... by : Huibert De Hek
Download or read book Interactions in mixed colloidal systems containing spherical si... written by Huibert De Hek and published by . This book was released on 19?? with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colloids and the Depletion Interaction by : Henk N.W. Lekkerkerker
Download or read book Colloids and the Depletion Interaction written by Henk N.W. Lekkerkerker and published by Springer Science & Business Media. This book was released on 2011-05-12 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloids are submicron particles that are ubiquitous in nature (milk, clay, blood) and industrial products (paints, drilling fluids, food). In recent decades it has become clear that adding depletants such as polymers or small colloids to colloidal dispersions allows one to tune the interactions between the colloids and in this way control the stability, structure and rheological properties of colloidal dispersions. This book offers a concise introduction to the fundamentals of depletion effects and their influence on the phase behavior of colloidal dispersions. Throughout the book, conceptual explanations are accompanied by experimental and computer simulation results. From the review by Kurt Binder: "They have succeeded in writing a monograph that is a very well balanced compromise between a very pedagogic introduction, suitable for students and other newcomers, and reviews of the advanced research trends in the field. Thus each chapter contains many and up to date references, but in the initial sections of the chapters, there are suggested exercises which will help the interested reader to recapitulate the main points of the treatment and to deepen his understanding of the subject. Only elementary knowledge of statistical thermodynamics is needed as a background for understanding the derivations presented in this book; thus this text is suitable also for advanced teaching purposes, useful of courses which deal with the physics for soft condensed matter. There does not yet exist any other book with a similar scope..... The readability of this book is furthermore enhanced by a list of symbols, and index of keywords, and last not least by a large number of figures, including many pedagogic sketches which were specifically prepared for this book. Thus, this book promises to be very useful for students and related applied sciences alike." Eur. Phys. J. E (2015) 38: 73
Book Synopsis Colloids and the Depletion Interaction by : Henk N.W. Lekkerkerker
Download or read book Colloids and the Depletion Interaction written by Henk N.W. Lekkerkerker and published by Springer. This book was released on 2011-05-23 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloids are submicron particles that are ubiquitous in nature (milk, clay, blood) and industrial products (paints, drilling fluids, food). In recent decades it has become clear that adding depletants such as polymers or small colloids to colloidal dispersions allows one to tune the interactions between the colloids and in this way control the stability, structure and rheological properties of colloidal dispersions. This book offers a concise introduction to the fundamentals of depletion effects and their influence on the phase behavior of colloidal dispersions. Throughout the book, conceptual explanations are accompanied by experimental and computer simulation results. From the review by Kurt Binder: "They have succeeded in writing a monograph that is a very well balanced compromise between a very pedagogic introduction, suitable for students and other newcomers, and reviews of the advanced research trends in the field. Thus each chapter contains many and up to date references, but in the initial sections of the chapters, there are suggested exercises which will help the interested reader to recapitulate the main points of the treatment and to deepen his understanding of the subject. Only elementary knowledge of statistical thermodynamics is needed as a background for understanding the derivations presented in this book; thus this text is suitable also for advanced teaching purposes, useful of courses which deal with the physics for soft condensed matter. There does not yet exist any other book with a similar scope..... The readability of this book is furthermore enhanced by a list of symbols, and index of keywords, and last not least by a large number of figures, including many pedagogic sketches which were specifically prepared for this book. Thus, this book promises to be very useful for students and related applied sciences alike." Eur. Phys. J. E (2015) 38: 73
Book Synopsis Colloids and Interfaces with Surfactants and Polymers by : Jim Goodwin
Download or read book Colloids and Interfaces with Surfactants and Polymers written by Jim Goodwin and published by John Wiley & Sons. This book was released on 2004-07-16 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is both an introduction to the field and a bridge to themore specialist texts that are available, and includes recent ideasthat have been developed on the interactions between particles andthe concentrated state. It covers the fundamentals of colloid andinterface science, placing emphasis on concentrated systems and theideas associated with them. Takes a user-friendly, non-mathematical approach Includes the widely used techniques such as rheology in greaterdepth than other introductory texts Gives many practical examples of colloid and interfacescience Provides guidance on how to apply new ideas to a number ofdifferent systems
Book Synopsis Interactions in Complex Solutions of Polymers, Particles, Salts and Surfactants by : Beatrice Nicole Cattoz
Download or read book Interactions in Complex Solutions of Polymers, Particles, Salts and Surfactants written by Beatrice Nicole Cattoz and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental pressures are driving detergent formulations to become ever-more so- phisticated blends of stabilisers; probing the interactions occurring in complex systems of hydrosoluble polymers with surfactants and their adsorption onto particles is key for the understanding of the mechanism of colloidal stability. In this thesis, the polymer-polymer and polymer-surfactant interactions have been investigated both in bulk and at the solid/liquid interface. The main techniques used were solvent relaxation NMR, photon correlation spectroscopy, small angle neutron scattering, diffusion NMR and optical reflectometry. The majority of experiments involved polyvinyl pyrrolidone, PVP, adsorbed on silica. Addition of sodium dodecyl sulfate, SDS, decreased the adsorbed amount but increased the layer thickness, leaving the remaining adsorbed polymer in an extended conformation caused by repulsive interactions amongst adsorbed surfactant aggregates and the silica interface. The introduction of a nonionic alcohol ethoxylate surfactant to this system prevented the desorption of the polymer layer as it formed mixed micelles with SDS reducing the total charges per micelle and lowering repulsions between the surface and the surfactant micelles. The effect of a non-adsorbing polymer, sodium polystyrene sulfonate, aPSS, on the stability of silica particles was also investigated, showing that addition of the polyelec- trolyte to the silica dispersion modifies the interparticles interactions. Small roughly spherical clusters were formed, followed by larger, less spherical aggregates resulting in the formation of a dense gel network. Exploring the PVP /N aPSS system showed that these polymers interact in bulk forming NaPSS-rich complexes; interfacial investigations revealed that adding aPSS to PVP previously adsorbed on silica led to surface complexes formation. Finally exposing PVP to sodium polyacrylate revealed some polymer interactions at high pH. These interactions were favoured by increasing molecular weights; adding this polymer to PVP adsorbed onto silica lead to a small decrease in adsorbed amount and some particle aggregation.
Book Synopsis Colloidal Silica by : Horacio E. Bergna
Download or read book Colloidal Silica written by Horacio E. Bergna and published by CRC Press. This book was released on 2005-12-19 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of the apparent simplicity of silica's composition and structure, scientists are still investigating fundamental questions regarding the formation, constitution, and behavior of colloidal silica systems. Colloidal Silica: Fundamentals and Applications introduces new information on colloid science related to silica chemistry as well
Book Synopsis Polymer Colloids by : Rodney Priestley
Download or read book Polymer Colloids written by Rodney Priestley and published by Royal Society of Chemistry. This book was released on 2019-12-02 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Academic and industrial research around polymer-based colloids is huge, driven both by the development of mature technologies, e.g. latexes for coatings, as well as the advancement of new materials and applications, such as building blocks for 2D/3D structures and medicine. Edited by two world-renowned leaders in polymer science and engineering, this is a fundamental text for the field. Based on a specialised course by the editors, this book provides the reader with an invaluable single source of reference. The first section describes formation, explaining basic properties of emulsions and dispersion polymerization, microfluidic approaches to produce polymer-based colloids and formation via directed self-assembly. The next section details characterisation methodologies from microscopy and small angle scattering, to surface science and simulations. The final chapters close with applications, including Pickering emulsions and molecular engineering for materials development. A comprehensive guide to polymer colloids, with contributions by leaders in their respective areas, this book is a must-have for researchers and practitioners working across polymers, soft matter and chemical and molecular engineering.
Book Synopsis Gums and Stabilisers for the Food Industry 9 by : Peter A. Williams
Download or read book Gums and Stabilisers for the Food Industry 9 written by Peter A. Williams and published by Elsevier. This book was released on 1998-07-01 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work contains the proceedings of a conference on gums and stabilisers for the food industry. Contributions are concerned with the structure-function relationships of various polysaccharides and protein systems, as well as progress on mixed biopolymer systems.
Book Synopsis Colloids and the Depletion Interaction by : Henk N. W. Lekkerkerker
Download or read book Colloids and the Depletion Interaction written by Henk N. W. Lekkerkerker and published by Springer Nature. This book was released on with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions in Colloidal Systems by :
Download or read book Interactions in Colloidal Systems written by and published by . This book was released on 2006 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main thread-line connecting the different parts of this dissertation is various non-double layer interactions present in the colloidal system. The first chapter is a general introduction to the double layer and non-double layer interactions. In chapter 2 and 3, the double layer and hydration interactions have been coupled into a single set of equations because both are dependent on the polarization of the water molecules. The coupled equations involve the electric fields generated by the surface charge and surface dipoles, as well as the field due to the neighboring dipoles in water. The obtained equations were employed to explain the restabilization observed experimentally at large ionic strengths for colloidal particles on which protein molecules were adsorbed. In chapter 4, a general expression for the force generated between the two charged plates immersed in an electrolyte solution containing relatively small charged particles was derived based on Langmuir's approach. For charged plates immersed in a solution of an electrolyte and charged small particles, the effects of particle charge, particle charge sign, particle size and volume fraction of the particles on the force acting between the two plates were examined. In chapter 5, a cell model was proposed to examine the behavior of a dispersion of large particles immersed in an electrolyte solution containing small particles. chapter 6, two-dimensional Poisson-Boltzmann equation was solved to calculate the double layer interactions between two plates grafted polyelectrolyte. In chapter 7, a lower dielectric constant in the polymer adsorption layer is suggested The hairy adsorption layer can have a long range effect on the repulsive double layer interactions. In chapter 8, the bridging force induced by polyelectrolyte was investigated by using a self-consistent-field approach which takes into account the van der Waals interactions between the segments of the polyelectrolyte molecules and the plates, as well as the electrostatic and volume exclusion interactions. A positive contribution to the force between two plates is generated by the van der Waals interactions between the segments and the plates.
Book Synopsis Polymeric Stabilization of Colloidal Dispersions by : Donald H. Napper
Download or read book Polymeric Stabilization of Colloidal Dispersions written by Donald H. Napper and published by . This book was released on 1983 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the International Conference on Colloid and Surface Science by : Y. Iwasawa
Download or read book Proceedings of the International Conference on Colloid and Surface Science written by Y. Iwasawa and published by Elsevier. This book was released on 2001-02-15 with total page 1129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this Conference was to discuss the results of recent developments and the future prospect in science and technology of the field. The field has been growing and flourishing, while indicating many problems to be uncovered and solved. The conference was structured to encourage interaction and to stimulate the exchange of ideas to accomplish the above purpose.Key issues and materials related to the Conference were included as follows: • Molecular Assemblies in Solutions; • Fine Particles and Colloidal Dispersions; • Supramolecular Organized Films; • Nanostructural Solid Surfaces; • Industrial Applications and Products.The Conference comprised 2 plenary lectures, 42 invited lectures, 150 oral presentations and 266 poster presentations.
Book Synopsis Dynamic Interactions of Silica Particles in Nonpolar Solvents by : Maria M. Kops-Werkhoven
Download or read book Dynamic Interactions of Silica Particles in Nonpolar Solvents written by Maria M. Kops-Werkhoven and published by . This book was released on 1982 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colloidal Gels of Fumed Silica: Microstructure, Surface Interactions and Temperature Effects by :
Download or read book Colloidal Gels of Fumed Silica: Microstructure, Surface Interactions and Temperature Effects written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The interactions of fumed oxides with organic solvents, polymers and biological systems are of great interest as they can be utilized as viscosity modifiers, fillers or adsorbents when mixed in or in contact with such materials. Fumed silica is of particular interest due to the large surface area that its branched structure provides for establishing interactions with specific matrices or chemical reactive groups. If these small particles are dispersed in an adequate medium, they can form suspensions, flocculated systems or three-dimensional networks; thus an understanding of how to control this microstructure is of paramount importance. Extensive research involving fumed silica dispersions has been conducted in areas such as inks, cosmetics, and paints. More recently, alternative novel applications such as fiber optic cables and composite polymer electrolytes, our major research effort in the past years, have gained especial importance. In this work, various types of fumed silica particles have been dispersed in different oligoethers and poly(ethylene oxide) PEO and their properties evaluated with the aim to finely tune them for improved performance during end use. Rheology, a reliable, easy, and readily available technique has been employed not only to characterize the systems, but also to study their microstructure and establish correlations that can be subsequently employed to tailor the material for the particular application. In particular, we examined dispersions of hydrophobic and hydrophilic fumed silica in oligoethers of different molecular weights and end group composition at different temperatures by using dynamic rheology. We observed that hydrophilic fumed silica particles form gels in the less polar oligoethers, whereas the hydrophobic ones form a network in all the oligoethers employed. Increasing the temperature increases irreversibly the gel modulus of the system containing hydrophilic fumed silica and the oligoether with the largest end group conte.
Book Synopsis Structure and Dynamics of Strongly Interacting Colloids and Supramolecular Aggregates in Solution by : Sow-Hsin Chen
Download or read book Structure and Dynamics of Strongly Interacting Colloids and Supramolecular Aggregates in Solution written by Sow-Hsin Chen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade, various powerful experimental tools have been developed, such as small angle X-ray and neutron scattering, X-ray and neutron reflection from interfaces, neutron spin-echo spectroscopy and quasi-elastic multiple light scattering and large scale computer simulations. Due to the rapid progress brought about by these techniques, one witnesses a resurgence of interest in the physicochemical properties of colloids, surfactants and macromolecules in solution. Although these disciplines have a long history, they are at present rapidly transforming into a new, interdisciplinary research area generally known as complex liquids or soft condensed matter physics: names that reflect the considerable involvement of the chemical and condensed matter physicists. This book is based on lectures given at a NATO ASI held in the summer of 1991 and discusses these new developments, both in theory and experiment. It constitutes the most up-to-date and comprehensive summary of the entire field.
Book Synopsis Phase Behavior and Effective Interactions in Colloidal Suspensions by :
Download or read book Phase Behavior and Effective Interactions in Colloidal Suspensions written by and published by Cuvillier Verlag. This book was released on 2007-04-25 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal suspensions describe particles with size from typically a few nanometers to a few microns which are dispersed in a medium. In physics, in chemistry, and in biology colloids play an important role and the study of colloidal systems underwent a recent renaissance. This is based on the development of experimental techniques, the availability of extensive computer simulations and well-developed theoretical approaches. From a technological point of view, the relevance of micro- and nanostructured materials and the presence of colloids in nature and everyday life motivates study of this rich field. In this thesis the phase behavior and the effective interactions of colloidal suspensions in bulk, in contact with surfaces, and in confined geometry are studied. For mixtures of particles with hard-core interactions the model introduced by Asakura, Oosawa and Vrij provides an appropriate starting-point. Based on that model the free-volume theory and the density functional theory are employed. In experimental systems one faces particles with properties such as the size or the shape which are described by a distribution. To capture that issue a generalized approach based on free-volume theory for treating mixtures of colloids and a polydisperse depletion agent is presented. Within that approach it is possible to treat size and morphology polydispersity. A depletion agent with a bimodal distribution possessing two length scales can be studied. Though the Asakura-Oosawa-Vrij model describes a simple fluid - a mixture of hard spheres and ideal polymer - the phenomenology is rather rich: in contact with a wall one finds layering and wetting effects and in confined geometry of a narrow pore one finds capillary condensation. The competition between both effects manifests itself in thermodynamic properties like the excess colloid adsorption and the solvation force between the two confining walls. Solvent phase separation complicates the evaluation of interparticle interactions between the solute particles. We address this question for the wall-colloid and the colloid-colloid geometry. For a non-spherical particle the effect of curvature on thermodynamic quantities is studied.
