Kinetics Of Surfactant Adsorption At The Solid Liquid Interface
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Kinetics Of Surfactant Adsorption At The Solid Liquid Interface
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Author : Thomas Daniel Curwen
language : en
Publisher:
Release Date : 2006
Kinetics Of Surfactant Adsorption At The Solid Liquid Interface written by Thomas Daniel Curwen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Ellipsometry categories.
Surfactant Adsorption And Surface Solubilization
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Author : Ravi Sharma
language : en
Publisher:
Release Date : 1995
Surfactant Adsorption And Surface Solubilization written by Ravi Sharma and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Language Arts & Disciplines categories.
Presents recent progress in the understanding of competitive adsorption. Describes adsolubilization and adsorption at the solid-liquid interface. Discusses kinetics of adsorption at liquid-liquid interfaces. Examines the structure of adsorbed layers.
Experimental Studies On The Adsorption Of Two Surfactants At Solid Liquid Interface
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Author : Camille Gutig
language : en
Publisher:
Release Date : 2007
Experimental Studies On The Adsorption Of Two Surfactants At Solid Liquid Interface written by Camille Gutig and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Micelles categories.
Adsorption From Solution At The Solid Liquid Interface
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Author : G. D. Parfitt
language : en
Publisher:
Release Date : 1983
Adsorption From Solution At The Solid Liquid Interface written by G. D. Parfitt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Science categories.
Non-electrolytes. Adsorption of small molecules. Adsorption from mixtures of miscible liquids. Adsorption of nonionic surfactants. Adsorption of polymers. Electrolytes. Adsorption of small ions. Adsorption of ionic surfactants. Adsorption of dyes. Adsorption of polyelectrolytes from dilute solution.
Interfacial Dynamics
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Author : Nikola Kallay
language : en
Publisher: CRC Press
Release Date : 2000-01-03
Interfacial Dynamics written by Nikola Kallay and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-01-03 with Science categories.
An examination of the theoretical foundations of the kinetics and thermodynamics of solid-liquid interfaces, as well as state-of-the-art industrial applications, this book presents information on surface and colloidal chemical processes and evaluates vital analytical tools such as atomic force microscopy, surface force apparatus measurements, and p
Understanding The Adsorption At Solid Liquid Interface And Its Consequences On Interfacial Phenomena
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Author : Nishad Dhopatkar
language : en
Publisher:
Release Date : 2017
Understanding The Adsorption At Solid Liquid Interface And Its Consequences On Interfacial Phenomena written by Nishad Dhopatkar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Adhesion categories.
Physical adsorption at solid-liquid interface is an effective way to dynamically alter the surface properties text/italics{in-situ} and is prevalent in biology, geoscience, biotechnology, catalysis, food processing, agriculture, textiles, coatings, adhesives and lubricants, and cosmetics Over the last century an extensive framework of the thermodynamics and kinetics of adsorption as well as the intermolecular forces that govern the physical interactions between the substrate, solute, and solvent has been established, helping elucidate the structure of adsorbates. However, there lacks an understanding of the connection between the local conformation of the adsorbed molecules and its influence on the macroscopic interfacial phenomena. In this research we have employed vibrational spectroscopy techniques namely the interface-selective non-linear sum frequency generation (SFG) and linear attenuated total reflectance Fourier transform infrared (ATR-FTIR) in conjugation with contact mechanics to develop the molecular level insights into macroscopic phenomena of wetting, adhesion, and sliding friction. We study the interfacial structure of small molecules (surfactants and solvents) as well as macromolecules adsorbed on model surfaces of sapphire (aluminum oxide) and silicone dioxide. Using SFG, we discovered a strongly coordinated ice-like water layer confined between two charged surfaces, under hydration pressures, formed by the adsorption of a cationic surfactant (cetyl trimethyl ammonium bromide, CTAB) on dissimilar hydrophobic surfaces (phenylethyl trichlorosilane, PETS self-assembled monolayer, and polydimethylsiloxane elastomer, PDMS). This strongly coordinated water structure forms past the surfactant concentration needed for a monolayer surface coverage and is observed to reduce the sliding friction. Correlating interface-selective spectroscopy with hydration forces, and their macroscopic manifestation on adhesion and friction requires us to reconsider how we understand water under confinement and its significance in more complicated interfacial processes prevalent in biology, chemistry, and engineering. To investigate the adsorption of a basic polymer (PMMA) on acidic surfaces in carbon tetrachloride (neutral), Chloroform (acidic), and acetone (basic) solvents, we used SFG and ATR-FTIR to build on to the established concept of acid-base interactions that explains limited adsorption from basic and acidic solutions compared to neutral solution due to competitive interactions. We show that besides the differences in adsorbed amount, chains adsorbed from an acidic solvent adopt a flat conformation with a much smaller ratio of segments of loops and tails to trains compared to those adsorbed from a neutral solvent. Surface interaction parameters alone cannot predict the differences in conformation of chains adsorbed from acidic or neutral solvents. Such differences in the static and dynamic conformations have consequences in understanding the exchange kinetics, colloidal stabilization, chromatographic separations, adhesion and friction, and stabilization of nanocomposites. The adsorption of polyelectrolytes driven by Coulombic interactions becomes complicated when mixed with oppositely charged surfactant which modulates the net charge and solubility of polyelectrolytes in water resulting in a characteristic bulk phase diagram. We have investigated the adsorption from pre-mixed solutions of a cationic polysaccharide (PQ10) and the anionic surfactant sodium dodecyl sulfate (SDS), on an amphoteric alumina surface using quartz crystal microbalance with dissipation (QCMD). By tuning the surface charge of the amphoteric alumina, we confirmed the importance of electrostatic interactions on the adsorption on a hydrophilic charged surface, a suggestion that was made earlier solely based on the measurements on negatively charged surfaces. We also directly correlate the bulk phase transitions at the interface adsorption by observing a maximum extent of adsorption on both negatively and positively charged surfaces from a solution corresponding to the maximum turbidity. Using the Voight based viscoelastic model, QCMD also provided information on the viscosity, shear modulus, and thickness of the adsorbed polymeric complex, findings of which were corroborated by underwater atomic force microscopy (AFM) measurements. Shifting gears from adsorption to understanding the polymer thin films surface structure in different environments, we used SFG to observe the surface restructuring of an amphiphilic glassy homopolymer poly(alpha-hydroxy-n-butyl acrylate, PHNB) from hydrophobic to aqueous environment. We observed relative changes in ordering of hydrophobic and hydroxyl pendant groups upon going from air to water at different temperatures showing their impact on wetting of the polymer surface observed by means of dynamic contact angles measurement.
Adsorption Of Proteins And Interactions With Surfactants At The Solid Liquid Interface
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Author : Marie Wahlgren
language : en
Publisher:
Release Date : 1992
Adsorption Of Proteins And Interactions With Surfactants At The Solid Liquid Interface written by Marie Wahlgren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Proteins categories.
Dynamics Of Adsorption At Liquid Interfaces
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Author : S.S. Dukhin
language : en
Publisher: Elsevier
Release Date : 1995-04-11
Dynamics Of Adsorption At Liquid Interfaces written by S.S. Dukhin and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-04-11 with Technology & Engineering categories.
As the first of its kind, this book provides a valuable introduction for scientists and engineers interested in liquid/fluid interfaces and disperse systems to the rapidly developing area of adsorption dynamics. It is the first extensive review available on the subject of dynamics of adsorption and gives a general summary of the current state of adsorption kinetics theory and experiments. Current progress in recently designed set-ups and improved and generalised known methods for studying interfacial relaxations is reviewed. In addition, the role of the electric charge of surfactants in the adsorption process is discussed in terms of a non-equilibrium distribution of adsorbing ions in the diffuse layer. Present theories of the effect of dynamic adsorption layers on mobile surfaces, such as moving drops and bubbles, based on both diffusion and kinetic controlled adsorption models are described and efficient approximate analytical methods to solve the mathematical problem of coupling surfactant transport and hydrodynamics are introduced. The role of a dynamic adsorption layer in bubble rising, film drainage and film stabilisation and in complex processes such as flotation and microflotation is discussed. Containing more than 1100 references, the book is essential reading for industrial scientists and graduate and post-graduate students in physical, surface and colloid chemistry, physico-chemical hydrodynamics, water purification and mineral processing.
Adsorption From Solution
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Author : R. H. Ottewill
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Adsorption From Solution written by R. H. Ottewill and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.
Adsorption From Solution discusses the significance of adsorption behavior in thermodynamic terms, with emphasis on the interplay between enthalpic and entropic contributions to the free energy. This book examines the role of simple models and of elementary thermodynamic and statistical mechanical arguments in relation to the concept of surface phase. Organized into 22 chapters, this book starts with an overview of the theoretical model for the solid/liquid interface. This text then proceeds with a discussion of the general thermodynamic treatment of adsorption from mixed solvents, which is designed to apply in situations where adsorbed species may be regarded as distinct from their bulk counterparts. Other chapters discuss the adsorption from solutions of various interfaces of liquid/gas, liquid/liquid, or liquid/solid. The final chapter deals with the roles of adsorption from solution in controlling other phenomena, such as liquid–liquid displacement, wetting, and the forces between colloidal particles. Physicists, chemists, and materials scientists will find this book extremely useful.
Characterization Of Surfactant Adsorption At A Liquid Liquid Interface By Drop Volume Tensiometry
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Author : Xiaohong Wang
language : en
Publisher:
Release Date : 1997
Characterization Of Surfactant Adsorption At A Liquid Liquid Interface By Drop Volume Tensiometry written by Xiaohong Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.