The Science of Defoaming

Theory, Experiment and Applications

Peter R. Garrett

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English

CRC Press
30 June 2020

Physical chemistry; Life sciences: general issues; Chemical engineering; Environmental science, engineering & technology

In the 20 years since the publication of the author’s multi-contributor volume on defoaming, a vast amount of new work has been published and many new insights have been revealed. A cohesive, single-authored book, The Science of Defoaming: Theory, Experiment and Applications provides comprehensive coverage of the topic. It describes the mode of action of antifoams, presenting the relevant theory and the supporting experimental evidence. Beginning with an introductory chapter that discusses the intrinsic properties of foam, the book then describes experimental methods for measuring foam properties important for studying antifoam action and techniques used in establishing the mode of action of antifoams.

Since most commercially effective antifoams are oil based, a chapter is devoted to the entry and spreading behavior of oils and the role of thin film forces in determining that behavior. The book reviews the mode of action of antifoams, including theories of antifoam mechanisms and the role of bridging foam films by particles and oil drops. It also addresses issues related to the effect of antifoam concentration on foam formation by air entrainment and the process of deactivation of mixed oil–particle antifoams during dispersal and foam generation.

For applications where chemical antifoam use is unacceptable, the text examines mechanical means of defoaming, such as the use of rotary devices and ultrasound. The final chapters consider the application of defoaming in radically different contexts including waterborne latex paints and varnishes, machine washing of textiles, gas–oil separation in crude oil production, and cardiopulmonary bypass surgery. Focusing on the basic science of defoaming, this book presents a balanced view, which also addresses the challenges that may arise for these specific defoaming applications.

By: Peter R. Garrett
Imprint: CRC Press
Country of Publication: United Kingdom
Dimensions: Height: 234mm, Width: 156mm,
Weight: 1.102kg
ISBN: 9780367576370
ISBN 10: 0367576376
Pages: 598
Publication Date: 30 June 2020
Audience: Professional and scholarly , Undergraduate
Format: Paperback
Publisher's Status: Active

Some General Properties of Foams. Experimental Methodologies for Study of Foam and Antifoam Action. Oils at Interfaces; Entry Coefficients, Spreading Coefficients, and Thin Film Forces. Mode of Action of Antifoams. Effect of Antifoam Concentration on Volumes of Foam Generated by Air Entrainment. Deactivation of Mixed Oil–Particle Antifoams During Dispersal And Foam Generation in Aqueous Media. Mechanical Methods for Defoaming. Antifoams for Detergent Products. The Control of Foam in Waterborne Latex Paints and Varnishes. Antifoams for Gas–Oil Separation in Crude Oil Production. Medical Applications of Defoaming.

After working for Unilever Research for almost thirty years at Port Sunlight and for a short time at Bangalore, Peter Garrett retired, acquiring visiting professorships at the University of Manchester in the United Kingdom and briefly at Rice University, Houston, Texas. He has worked on various aspects of interfacial science in a career lasting 40 years. These included the equilibrium and dynamic adsorption behavior of surfactant solutions, solubilization in microemulsions, kinetics of surfactant dissolution and mesophase growth, and of course both the basic science of defoaming and its application especially in the detergents industry. Professor Garrett is author or coauthor of more than 30 journal articles and is named as inventor on 14 patents, the majority of which concerned the application of antifoam technology. He is also editor of the book Defoaming, Theory and Applications published in 1993. A member of the Royal Society of Chemistry, he received his Ph.D. from the University of Leicester in the United Kingdom in 1971.