Overview

Teaching the fundamental knowledge required for successful dispersion of powders in a liquid, this book covers a host of topics -- from recent advances to industrial applications. In 15 chapters it supports formulation chemists in preparing a suspension in a more rational way, by applying the principles of colloid and interface science, while at the same time enabling the research scientist to discover new methods for preparing stable suspensions. Essential reading for those working in the pharmaceutical, cosmetic, food, paint, ceramic and agricultural industries.

Full Product Details

Author:   Tharwat F. Tadros (Wokingham, Berkshire, UK)
Publisher:   Wiley-VCH Verlag GmbH
Imprint:   Blackwell Verlag GmbH
Dimensions:   Width: 17.60cm , Height: 1.90cm , Length: 24.80cm
Weight:   0.699kg
ISBN:  

9783527329410

ISBN 10:   3527329412
Pages:   298
Publication Date:   13 June 2012
Audience:   College/higher education ,  Postgraduate, Research & Scholarly
Format:   Hardback
Publisher's Status:   Active
Availability:   To order  
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Table of Contents

"Preface GENERAL INTRODUCTION Fundamental Knowledge Required for Successful Dispersions of Powders into Liquids Particle Dimensions in Suspensions Concentration Range of Suspensions Outline of the Book FUNDAMENTALS OF WETTING AND SPREADING Introduction The Concept of the Contact Angle Adhesion Tension Work of Adhesion Wa Work of Cohesion Calculation of Surface Tension and Contact Angle The Spreading of Liquids on Surfaces Contact Angle Hysteresis THE CRITICAL SURFACE TENSION OF WETTING AND THE ROLE OF SURFACTANTS IN POWDER WETTING The Critical Surface Tension of Wetting Theoretical Basis of the Critical Surface Tension Effect of Surfactant Adsorption Dynamic Processes of Adsorption and Wetting Wetting of Powders by Liquids STRUCTURE OF THE SOLID-LIQUID INTERFACE AND ELECTROSTATIC STABILIZATION Structure of the Solid-Liquid Interface Structure of the Electrical Double Layer Distinction between Specific and Nonspecific Adsorbed Ions Electrical Double-Layer Repulsion van der Waals Attraction Total Energy of Interaction Flocculation of Suspensions Criteria for Stabilization of Dispersions with Double-Layer Interaction ELECTROKINETIC PHENOMENA AND ZETA POTENTIAL Stern-Grahame Model of the Double Layer Calculation of Zeta Potential from Particle Mobility Measurement of Electrophoretic Mobility and Zeta Potential Electroacoustic Methods GENERAL CLASSIFICATION OF DISPERSING AGENTS AND ADSORPTION OF SURFACTANTS AT THE SOLID/LIQUID INTERFACE Classification of Dispersing Agents ADSORPTION AND CONFORMATION OF POLYMERIC SURFACTANTS AT THE SOLID-LIQUID INTERFACE Theories of Polymer Adsorption Experimental Techniques for Studying Polymeric Adsorption Measurement of the Adsorption Isotherm Measurement of the Fraction of Segments p Determination of the Segment Density Distribution p(z) and Adsorbed Layer Thickness delta h Examples of the Adsorption Isotherms of Nonionic Polymeric Surfactants Adsorbed Layer Thickness Results Kinetics of Polymer Adsorption STABILIZATION AND DESTABILIZATION OF SUSPENSIONS USING POLYMERIC SURFACTANTS AND THE THEORY OF STERIC STABILIZATION Introduction Interaction between Particles Containing Adsorbed Polymeric Surfactant Layers (Steric Stabilization) Flocculation of Sterically Stabilized Dispersions Bridging Flocculation by Polymers and Polyelectrolytes Examples for Suspension Stabilization Using Polymeric Surfactants Polymeric Surfactants for Stabilization of Preformed Latex Dispersions PROPERTIES OF CONCENTRATED SUSPENSIONS Interparticle Interactions and Their Combination Definition of ""Dilute"", ""Concentrated"", and ""Solid"" Suspensions States of Suspension on Standing SEDIMENTATION OF SUSPENSIONS AND PREVENTION OF FORMATION OF DILATANT SEDIMENTS Sedimentation Rate of Suspensions Prevention of Sedimentation and Formation of Dilatant Sediments CHARACTERIZATION OF SUSPENSIONS AND ASSESSMENT OF THEIR STABILITY Introduction Assessment of the Structure of the Solid/Liquid Interface Assessment of Sedimentation of Suspensions Assessment of Flocculation and Ostwald Ripening (Crystal Growth) Scattering Techniques Measurement of Rate of Flocculation Measurement of Incipient Flocculation Measurement of Crystal Growth (Ostwald Ripening) Bulk Properties of Suspensions: Equilibrium Sediment Volume (or Height) and Redispersion RHEOLOGICAL TECHNIQUES FOR ASSESSMENT OF STABILITY OF SUSPENSIONS Introduction Steady-State Measurements Constant Stress (Creep) Measurements Dynamic (Oscillatory) Measurements RHEOLOGY OF CONCENTRATED SUSPENSIONS Introduction"

Reviews

Therefore, it is an essential and interdisciplinary guideline, and warmly recommended not only to those working in the field of dispersions/suspensions in pharmaceutical, cosmetic, food, paint, ceramic and agricultural industries but also to students, scientists and practitioners in other scientific fields (chemistry/food science & technology/food processing, production, etc). ( Advances in Food Science , 1 January 2013)

?Therefore, it is an essential and interdisciplinary guideline, and warmly recommended not only to those working in the field of dispersions/suspensions in pharmaceutical, cosmetic, food, paint, ceramic and agricultural industries but also to students, scientists and practitioners in other scientific fields (chemistry/food science & technology/food processing, production, etc).? (Advances in Food Science, 1 January 2013)

Therefore, it is an essential and interdisciplinaryguideline, and warmly recommended not only to those working in thefield of dispersions/suspensions in pharmaceutical, cosmetic, food,paint, ceramic and agricultural industries but also to students,scientists and practitioners in other scientific fields(chemistry/food science & technology/food processing,production, etc). (Advances in Food Science, 1January 2013)

<p> Therefore, it is an essential and interdisciplinaryguideline, and warmly recommended not only to those working in thefield of dispersions/suspensions in pharmaceutical, cosmetic, food,paint, ceramic and agricultural industries but also to students,scientists and practitioners in other scientific fields(chemistry/food science & technology/food processing,production, etc). (Advances in Food Science, 1January 2013)

Therefore, it is an essential and interdisciplinary guideline, and warmly recommended not only to those working in the field of dispersions/suspensions in pharmaceutical, cosmetic, food, paint, ceramic and agricultural industries but also to students, scientists and practitioners in other scientific fields (chemistry/food science & technology/food processing, production, etc). (Advances in Food Science, 1 January 2013)

<p> Therefore, it is an essential and interdisciplinary guideline, and warmly recommended not only to those working in the field of dispersions/suspensions in pharmaceutical, cosmetic, food, paint, ceramic and agricultural industries but also to students, scientists and practitioners in other scientific fields (chemistry/food science & technology/food processing, production, etc). (Advances in Food Science, 1 January 2013)

Author Information

Tharwat F. Tadros was appointed lecturer in Physical Chemistry at Alexandria University in 1962 and served in this position until 1966. Between 1966 and 1969, he spent his sabbatical leave at the Agricultural University of Wageningen and T.N.O. in Delft, The Netherlands. Thereafter, he joined I.C.I. and ZENECA until 1994, where he researched various fields of surfactants, emulsions, suspensions, microemulsions, wetting, spreading & adhesion, and rheology. During that period he was also appointed visiting professor at Imperial College London, Bristol University, and Reading University. In 1992, he was elected President of the International Association of Colloid and Interface Science. Since leaving ZENECA, Tharwat F. Tadros has worked as a consultant for various industries and has also taught several courses in his specialized field. He is the recipient of two medals from the Royal Society of Chemistry in the UK, and has more than 250 scientific papers to his name.

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