Dispersion of Powders

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To successfully disperse a powder into a liquid and prevent aggregation of the particles, the properties and effects governing their combining need to be examined. This book explains the fundamentals required to enable the reader to produce suspensions that can be applied in a variety of industries. The 13 chapters will inform formulation chemists how best to prepare a suspension in a more rational manner, 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. From the contents: * General Introduction * Fundamentals of Wetting and Spreading * The Critical Surface Tension of Wetting and the Role of Surfactants in Powder Wetting * Structure of the Solid-Liquid Interface and Electrostatic Stabilization * Electrokinetic Phenomena and Zeta Potential * General Classifi cation of Dispersing Agents and Adsorption of Surfactants at the Solid-Liquid Interface * Adsorption and Conformation of Polymer Surfactants at the Solid-Liquid Interface * Stabilization and Destabilization of Suspensions Using Polymeric Surfactants and the Theory of Steric Stabilization * Properties of Concentrated Suspensions * Sedimentation of Suspensions and Prevention of Formation of Dilatant Sediments * Characterization of Suspensions and Assessment of Their Stability * Rheological Techniques for Assessment of Stability of Suspensions * Rheology of Concentrated Suspensions This book is essential reading for those working in the pharmaceutical, cosmetic, food, paint, ceramic, and agricultural industries.