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Rheology of Dispersions

Principles and Applications

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Bibliografische Daten
ISBN/EAN: 9783527320035
Sprache: Englisch
Umfang: XVI, 200 S., 427 s/w Illustr., 12 s/w Tab., 439 Il
Format (T/L/B): 1.5 x 25 x 17.7 cm
Auflage: 1. Auflage 2010
Einband: gebundenes Buch

Beschreibung

Lange erwartet, jetzt ist es da: ein Buch, das die Prinzipien der Rheologie konsequent auf Dispersionen anwendet. Der praxisorientierte Titel hilft Chemikern und Chemieingenieuren, disperse Systeme zu formulieren und zu optimieren und dabei viel Zeit und Mittel zu sparen.

Autorenportrait

Tharwat F. Tadros was appointed lecturer in Physical Chemsitry (1962-1966) at Alexandria University. Between 1966 and 1969, he spent a sabbatical 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 also given 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.

Inhalt

Preface GENERAL INTRODUCTION INTERPARTICLE INTERACTIONS AND THEIR COMBINATION Hard-Sphere Interaction -Soft- or Electrostatic Interaction Steric Interaction van der Waals Attractions Combination of Interaction Forces Flocculation of Dispersions, and Its Prevention Distinction between -Dilute-, -Concentrated-, and -Solid- Dispersions States of Suspension on Standing States of the Emulsion on Standing PRINCIPLES OF STEADY-STATE MEASUREMENTS Strain Rate of Shear Rate Types of Rheological Behavior in Simple Shear Time Effects During Flow: Thixotropy and Negative (or Anti-) Thixotropy Rheopexy Turbulent Flow Effect of Temperature Measurement of Viscosity as a Function of Shear Rate: The Steady-State Regime Non-Newtonians Major Precautions with Concentric Cylinder Viscometers PRINCIPLES OF VISCOELASTIC BEHAVIOR Introduction The Deborah Number Strain Relaxation after the Sudden Application of Stress (Creep) Analysis of Creep Crves The Berger Model (Maxwell + Kelvin) Creep Procedure Stress Relaxation after Sudden Application of Strain Dynamic (Oscillatory) Techniques RHEOLOGY OF SUSPENSIONS Introduction The Einstein Equation The Bachelor Equation Rheology of Concentrated Suspensions Rheology of Hard-Sphere Suspensions Rheology of Systems with -Soft- or Electrostatic Interaction Rheology of Sterically Stabilized Dispersions Rheology of Flocculated Suspensions Models for the Interpretation of Rheological Results RHEOLOGY OF EMULSIONS Introduction Interfacial Rheology Bulk Rheology of Emulsions RHEOLOGY MODIFIERS, THICKENERS, AND GELS Introduction Classification of Thickeners and Gels Definition of a -Gel- Rheological Behavior of a -Gel- Classification of Gels Rheology Modifiers Based on Surfactant Systems USE OF RHEOLOGICAL MEASUREMENTS FOR ASSESSMENT AND PREDICTION OF THE LONG-TERM PHYSICAL STABILITY OF FORMULATIONS (CREAMING AND SEDIMENTATION) Introduction Sedimentation of Suspensions Assessment and Prediction of Flocculation Using Rheological Techniques Assessment and Prediction of Emulsion Coalescence Using Rheological Techniques

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