Particle-Stabilized Emulsions and Colloids

Particle-Stabilized Emulsions and Colloids

Author: To Ngai

Publisher: Royal Society of Chemistry

Published: 2014-11-13

Total Pages: 337

ISBN-13: 1782620141

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There has been much scientific interest in the behaviour of colloidal particles at liquid interfaces. From a research aspect they provide model systems for fundamental studies of condensed matter physics. From a commercial aspect they provide applications for making new materials in the cosmetics, food and paint industries. In many cases of colloidal particles at interfaces, the mechanism of particle interactions is still unknown. Particle-Stabilized Emulsions and Colloids looks at recent studies on the behaviour of particles at liquid interfaces. The book first introduces the basic concepts and principles of colloidal particles at liquid-liquid interfaces including the interactions and conformations. The book then discusses the latest advances in emulsions and bicontinuous emulsions stabilized by both solid and soft particles and finally the book covers applications in food science and oil extraction. With contributions from leading experts in these fields, this book will provide a background to academic researchers, engineers, and graduate students in chemistry, physics and materials science. The commercial aspects will also be of interest to those working in the cosmetics, food and oil industry.


Book Synopsis Particle-Stabilized Emulsions and Colloids by : To Ngai

Download or read book Particle-Stabilized Emulsions and Colloids written by To Ngai and published by Royal Society of Chemistry. This book was released on 2014-11-13 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been much scientific interest in the behaviour of colloidal particles at liquid interfaces. From a research aspect they provide model systems for fundamental studies of condensed matter physics. From a commercial aspect they provide applications for making new materials in the cosmetics, food and paint industries. In many cases of colloidal particles at interfaces, the mechanism of particle interactions is still unknown. Particle-Stabilized Emulsions and Colloids looks at recent studies on the behaviour of particles at liquid interfaces. The book first introduces the basic concepts and principles of colloidal particles at liquid-liquid interfaces including the interactions and conformations. The book then discusses the latest advances in emulsions and bicontinuous emulsions stabilized by both solid and soft particles and finally the book covers applications in food science and oil extraction. With contributions from leading experts in these fields, this book will provide a background to academic researchers, engineers, and graduate students in chemistry, physics and materials science. The commercial aspects will also be of interest to those working in the cosmetics, food and oil industry.

Understanding Behavior of Particle Stabilized Emulsions and Transformations in Colloidal Systems

Understanding Behavior of Particle Stabilized Emulsions and Transformations in Colloidal Systems

Author: Amitesh Saha

Publisher:

Published: 2015

Total Pages: 184

ISBN-13:

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Book Synopsis Understanding Behavior of Particle Stabilized Emulsions and Transformations in Colloidal Systems by : Amitesh Saha

Download or read book Understanding Behavior of Particle Stabilized Emulsions and Transformations in Colloidal Systems written by Amitesh Saha and published by . This book was released on 2015 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Foams and Emulsions

Foams and Emulsions

Author: J.F. Sadoc

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 611

ISBN-13: 9401591571

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A general and introductory survey of foams, emulsions and cellular materials. Foams and emulsions are illustrations of some fundamental concepts in statistical thermodynamics, rheology, elasticity and the physics and chemistry of divided media and interfaces. They also give rise to some of the most beautiful geometrical shapes and tilings, ordered or disordered. The chapters are grouped into sections having fairly loose boundaries. Each chapter is intelligible alone, but cross referencing means that the few concepts that may not be familiar to the reader can be found in other chapters in the book. Audience: Research students, researchers and teachers in physics, physical chemistry, materials science, mechanical engineering and geometry.


Book Synopsis Foams and Emulsions by : J.F. Sadoc

Download or read book Foams and Emulsions written by J.F. Sadoc and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general and introductory survey of foams, emulsions and cellular materials. Foams and emulsions are illustrations of some fundamental concepts in statistical thermodynamics, rheology, elasticity and the physics and chemistry of divided media and interfaces. They also give rise to some of the most beautiful geometrical shapes and tilings, ordered or disordered. The chapters are grouped into sections having fairly loose boundaries. Each chapter is intelligible alone, but cross referencing means that the few concepts that may not be familiar to the reader can be found in other chapters in the book. Audience: Research students, researchers and teachers in physics, physical chemistry, materials science, mechanical engineering and geometry.

Colloidal Particles at Liquid Interfaces

Colloidal Particles at Liquid Interfaces

Author: Bernard P. Binks

Publisher: Cambridge University Press

Published: 2006-08-17

Total Pages: 500

ISBN-13: 1139458183

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The understanding of how small solid particles operate at liquid interfaces is minimal. This book brings together the topics actively being investigated, with contributions from experts in the field. It will be of interest to researchers in chemistry, physics, chemical engineering, pharmacy, food science and materials science.


Book Synopsis Colloidal Particles at Liquid Interfaces by : Bernard P. Binks

Download or read book Colloidal Particles at Liquid Interfaces written by Bernard P. Binks and published by Cambridge University Press. This book was released on 2006-08-17 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of how small solid particles operate at liquid interfaces is minimal. This book brings together the topics actively being investigated, with contributions from experts in the field. It will be of interest to researchers in chemistry, physics, chemical engineering, pharmacy, food science and materials science.

Colloidal Particles at Fluid Interfaces

Colloidal Particles at Fluid Interfaces

Author: Christopher Adam Griffith

Publisher:

Published: 2019

Total Pages: 0

ISBN-13:

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This work uses silica nanoparticles to stabilize oil-in-water and water-in-water emulsions. These emulsions are called Pickering emulsions and have potential use for enhanced oil recovery. There are two challenges with using nanoparticles for subsurface applications which are the high salinities and elevated temperatures of reservoir brines. These conditions are problematic because nanoparticles without surface modification are unstable, because of nanoparticle charge screening, which leads to particle agglomeration. Additionally, much of the current research on particle stabilized emulsions focuses on using nanoparticles modified with hydrophobic molecules or surfactants with the sole intent of getting particles to the oil/water interface. Because of this, many of these particles are not applicable for subsurface applications due to their lack of stability in brine. To address these challenges, I functionalize silica nanoparticles with different concentrations of a hydrophilic silane called (3-glycidyloxypropyl)trimethoxysilane (glymo) and stabilize Pickering emulsions with these particles. Glymo was selected as a nanoparticle surface modifier because of its ability to sterically stabilize particles in brine. I characterized the static stability of different Pickering emulsion formulations by using a centrifuge and by calculating the emulsion demulsification pressure. I correlate a critical demulsification pressure to emulsions that show little change in emulsion drop size while flowing, which I define as dynamically stable. The critical demulsification pressure is applied to several untested Pickering emulsion formulations to verify its applicability as an emulsion pre-screening tool. I perform a rheological characterization on emulsions stabilized with low and high surface coverage glymo-coated particles to establish relationships between nanoparticle bridging and the extent of glymo surface modification with different ionic strength brines. I use cryo-scanning electron microscopy to visually assess the bridging behavior of these different Pickering emulsions. I use fumed silica particles, with different wettabilities, and assess their ability to destabilize a model Pickering emulsion. I determine there is a strong correlation between the wettability of a fumed silica particle and its ability to destabilize a model emulsion. This work is relevant because most of the current research on Pickering emulsions focuses primarily on how to tune the properties of colloidal particles to generate stable emulsions with less overall emphasis on methods to destabilize them. Lastly, an aqueous, two phase system is stabilized with 6 nm and 50 nm silica particles modified with 2-(methoxy(polyethyleneoxy)6-9propyl)trimethoxysilane (PEG-silane). Stabilization of the water/water interface results in emulsions that have relatively good stability to shear. Water-in-water emulsions do not contain any oil which is often considered a major limitation of Pickering emulsions for EOR, therefore these emulsions are potential candidates for enhanced oil recovery


Book Synopsis Colloidal Particles at Fluid Interfaces by : Christopher Adam Griffith

Download or read book Colloidal Particles at Fluid Interfaces written by Christopher Adam Griffith and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work uses silica nanoparticles to stabilize oil-in-water and water-in-water emulsions. These emulsions are called Pickering emulsions and have potential use for enhanced oil recovery. There are two challenges with using nanoparticles for subsurface applications which are the high salinities and elevated temperatures of reservoir brines. These conditions are problematic because nanoparticles without surface modification are unstable, because of nanoparticle charge screening, which leads to particle agglomeration. Additionally, much of the current research on particle stabilized emulsions focuses on using nanoparticles modified with hydrophobic molecules or surfactants with the sole intent of getting particles to the oil/water interface. Because of this, many of these particles are not applicable for subsurface applications due to their lack of stability in brine. To address these challenges, I functionalize silica nanoparticles with different concentrations of a hydrophilic silane called (3-glycidyloxypropyl)trimethoxysilane (glymo) and stabilize Pickering emulsions with these particles. Glymo was selected as a nanoparticle surface modifier because of its ability to sterically stabilize particles in brine. I characterized the static stability of different Pickering emulsion formulations by using a centrifuge and by calculating the emulsion demulsification pressure. I correlate a critical demulsification pressure to emulsions that show little change in emulsion drop size while flowing, which I define as dynamically stable. The critical demulsification pressure is applied to several untested Pickering emulsion formulations to verify its applicability as an emulsion pre-screening tool. I perform a rheological characterization on emulsions stabilized with low and high surface coverage glymo-coated particles to establish relationships between nanoparticle bridging and the extent of glymo surface modification with different ionic strength brines. I use cryo-scanning electron microscopy to visually assess the bridging behavior of these different Pickering emulsions. I use fumed silica particles, with different wettabilities, and assess their ability to destabilize a model Pickering emulsion. I determine there is a strong correlation between the wettability of a fumed silica particle and its ability to destabilize a model emulsion. This work is relevant because most of the current research on Pickering emulsions focuses primarily on how to tune the properties of colloidal particles to generate stable emulsions with less overall emphasis on methods to destabilize them. Lastly, an aqueous, two phase system is stabilized with 6 nm and 50 nm silica particles modified with 2-(methoxy(polyethyleneoxy)6-9propyl)trimethoxysilane (PEG-silane). Stabilization of the water/water interface results in emulsions that have relatively good stability to shear. Water-in-water emulsions do not contain any oil which is often considered a major limitation of Pickering emulsions for EOR, therefore these emulsions are potential candidates for enhanced oil recovery

Particles at Fluid Interfaces

Particles at Fluid Interfaces

Author: Erica Wanless

Publisher: Frontiers Media SA

Published: 2019-05-09

Total Pages: 197

ISBN-13: 2889458083

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Particles at Fluid Interfaces encompasses the processes and formulations that involve the stabilisation of fluid interfaces by adsorbed particles. The prevalence of these multiphase materials underpins their use in a broad range of industries from personal care and food technology to oil and mineral processing. The stabilisation conferred by the adsorbed particles can be transient as found in froth flotation or long-lived as occurs within Pickering Emulsions. The particles can range in size from nanoparticles to millimetre-sized particles, and cover a spectrum from collapsed proteins, polymeric colloids of controlled size and shape to high dispersity mineral particles.


Book Synopsis Particles at Fluid Interfaces by : Erica Wanless

Download or read book Particles at Fluid Interfaces written by Erica Wanless and published by Frontiers Media SA. This book was released on 2019-05-09 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particles at Fluid Interfaces encompasses the processes and formulations that involve the stabilisation of fluid interfaces by adsorbed particles. The prevalence of these multiphase materials underpins their use in a broad range of industries from personal care and food technology to oil and mineral processing. The stabilisation conferred by the adsorbed particles can be transient as found in froth flotation or long-lived as occurs within Pickering Emulsions. The particles can range in size from nanoparticles to millimetre-sized particles, and cover a spectrum from collapsed proteins, polymeric colloids of controlled size and shape to high dispersity mineral particles.

Food Emulsions and Foams

Food Emulsions and Foams

Author: E. Dickinson

Publisher: Elsevier

Published: 1987-02-01

Total Pages: 299

ISBN-13: 1845698304

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This text explains how properties of the system are affected by such factors as the crystallisation of the fat, the surface behaviour of the proteins, and presence of various small molecules and ions in the aqueous phase.


Book Synopsis Food Emulsions and Foams by : E. Dickinson

Download or read book Food Emulsions and Foams written by E. Dickinson and published by Elsevier. This book was released on 1987-02-01 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explains how properties of the system are affected by such factors as the crystallisation of the fat, the surface behaviour of the proteins, and presence of various small molecules and ions in the aqueous phase.

Emulsion-based Systems for Delivery of Food Active Compounds

Emulsion-based Systems for Delivery of Food Active Compounds

Author: Shahin Roohinejad

Publisher: John Wiley & Sons

Published: 2018-06-18

Total Pages: 288

ISBN-13: 1119247144

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A comprehensive text that offers a review of the delivery of food active compounds through emulsion-based systems Emulsion-based Systems for Delivery of Food Active Compounds is a comprehensive recourse that reviews the principles of emulsion-based systems formation, examines their characterization and explores their effective application as carriers for delivery of food active ingredients. The text also includes information on emulsion-based systems in regards to digestibility and health and safety challenges for use in food systems. Each chapter reviews specific emulsion-based systems (Pickering, multiple, multilayered, solid lipid nanoparticles, nanostructured lipid carriers and more) and explains their application for delivery of food active compounds used in food systems. In addition, the authors – noted experts in the field – review the biological fate, bioavailability and the health and safety challenges of using emulsion-based systems as carriers for delivery of food active compounds in food systems. This important resource: Offers a comprehensive text that includes detailed coverage of emulsion-based systems for the delivery of food active compounds Presents the most recent development in emulsion-based systems that are among the most widely-used delivery systems developed to control the release of food active compounds Includes a guide for industrial applications for example food and drug delivery is a key concern for the food and pharmaceutical industries Emulsion-based Systems for Delivery of Food Active Compounds is designed for food scientists as well as those working in the food, nutraceutical and pharmaceutical and beverage industries. The text offers a comprehensive review of the essential elements of emulsion-based systems for delivery of food active compounds.


Book Synopsis Emulsion-based Systems for Delivery of Food Active Compounds by : Shahin Roohinejad

Download or read book Emulsion-based Systems for Delivery of Food Active Compounds written by Shahin Roohinejad and published by John Wiley & Sons. This book was released on 2018-06-18 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive text that offers a review of the delivery of food active compounds through emulsion-based systems Emulsion-based Systems for Delivery of Food Active Compounds is a comprehensive recourse that reviews the principles of emulsion-based systems formation, examines their characterization and explores their effective application as carriers for delivery of food active ingredients. The text also includes information on emulsion-based systems in regards to digestibility and health and safety challenges for use in food systems. Each chapter reviews specific emulsion-based systems (Pickering, multiple, multilayered, solid lipid nanoparticles, nanostructured lipid carriers and more) and explains their application for delivery of food active compounds used in food systems. In addition, the authors – noted experts in the field – review the biological fate, bioavailability and the health and safety challenges of using emulsion-based systems as carriers for delivery of food active compounds in food systems. This important resource: Offers a comprehensive text that includes detailed coverage of emulsion-based systems for the delivery of food active compounds Presents the most recent development in emulsion-based systems that are among the most widely-used delivery systems developed to control the release of food active compounds Includes a guide for industrial applications for example food and drug delivery is a key concern for the food and pharmaceutical industries Emulsion-based Systems for Delivery of Food Active Compounds is designed for food scientists as well as those working in the food, nutraceutical and pharmaceutical and beverage industries. The text offers a comprehensive review of the essential elements of emulsion-based systems for delivery of food active compounds.

Emulsion Science

Emulsion Science

Author: Jerôme Bibette

Publisher: Springer

Published: 2003-07-01

Total Pages: 148

ISBN-13: 3540708200

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Emulsions occur either as end products or during the processing of products in a huge range of areas including the food, agrochemical, pharmaceuticals, paints and oil industries. As end products, emulsions allow to avoid organic solvent in processing hydrophobic coatings. Emulsion technology is a suitable approach to vehicle viscous phases. It is also a remarkable mean of targeting actives or capturing specific species. The range of applications of emulsions progresses and their manufacturing becomes more and more sophisticated. Besides this broad domain of technological interest, emulsions are raising a variety of fundamental questions at the frontier between physic and chem istry. Indeed, as a class of soft colloidal materials, emulsions science is linked to various aspects of these disciplines: phase transitions, surface forces and wetting, metastability and hydrodynamic instabilities, mechanical properties and flow. The aim of this book is to review the main important concepts governing emulsion science. In Chapter 2, repulsive interactions between liquid films are discussed as well as adhesive interaction related to wetting. In Chap ter 3, consequences of weak and strong attractions are presented, related to the well accepted liquid solid transition analogy. In Chapter 4, the basics of both bulk compressibility and shear elasticity are presented, the role of disorder being the most important aspect of the elastic behavior of these soft systems. In Chapter 5 the central question of the emulsion lifetime related to metastability is discussed.


Book Synopsis Emulsion Science by : Jerôme Bibette

Download or read book Emulsion Science written by Jerôme Bibette and published by Springer. This book was released on 2003-07-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsions occur either as end products or during the processing of products in a huge range of areas including the food, agrochemical, pharmaceuticals, paints and oil industries. As end products, emulsions allow to avoid organic solvent in processing hydrophobic coatings. Emulsion technology is a suitable approach to vehicle viscous phases. It is also a remarkable mean of targeting actives or capturing specific species. The range of applications of emulsions progresses and their manufacturing becomes more and more sophisticated. Besides this broad domain of technological interest, emulsions are raising a variety of fundamental questions at the frontier between physic and chem istry. Indeed, as a class of soft colloidal materials, emulsions science is linked to various aspects of these disciplines: phase transitions, surface forces and wetting, metastability and hydrodynamic instabilities, mechanical properties and flow. The aim of this book is to review the main important concepts governing emulsion science. In Chapter 2, repulsive interactions between liquid films are discussed as well as adhesive interaction related to wetting. In Chap ter 3, consequences of weak and strong attractions are presented, related to the well accepted liquid solid transition analogy. In Chapter 4, the basics of both bulk compressibility and shear elasticity are presented, the role of disorder being the most important aspect of the elastic behavior of these soft systems. In Chapter 5 the central question of the emulsion lifetime related to metastability is discussed.

Nanocosmetics

Nanocosmetics

Author: Arun Nanda

Publisher: Elsevier

Published: 2020-05-06

Total Pages: 521

ISBN-13: 0128222859

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Nanotechnology is key to the design and manufacture of the new generation of cosmetics. Nanotechnology can enhance the performance and properties of cosmetics, including colour, transparency, solubility, texture, and durability. Sunscreen products, such as UV nano-filters, nano-TiO2 and nano-ZnO particles, can offer an advantage over their traditional counterparts due to their broad UV-protection and non-cutaneous side effects. For perfumes, nano-droplets can be found in cosmetic products including Eau de Toilette and Eau de Parfum. Nanomaterials can also be used in cosmetics as transdermal drug delivery systems. By using smart nanocontainers, active compounds such as vitamins, antioxidants, nutrients, and anti-inflammatory, anti-infective agents, can be delivered effectively. These smart nanocontainers are typically related with the smart releasing property for their embedded active substances. These smart releases could be obtained by using the smart coatings as their outer nano-shells. These nano-shells could prevent the direct contact between these active agents and the adjacent local environments. Nanocosmetics: Fundamentals, Applications and Toxicity explores the formulation design concepts and emerging applications of nanocosmetics. The book also focuses on the mitigation or prevention of their potential nanotoxicity, potential global regulatory challenges, and the technical challenges of mass implementation. It is an important reference source for materials scientists and pharmaceutical scientists looking to further their understanding of how nanotechnology is being used for the new generation of cosmetics. Outlines the major fabrication and formulation design concepts of nanoscale products for cosmetic applications Explores how nanomaterials can safely be used for various applications in cosmetic products Assesses the major challenges of using nanomaterials for cosmetic applications on a large scale


Book Synopsis Nanocosmetics by : Arun Nanda

Download or read book Nanocosmetics written by Arun Nanda and published by Elsevier. This book was released on 2020-05-06 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology is key to the design and manufacture of the new generation of cosmetics. Nanotechnology can enhance the performance and properties of cosmetics, including colour, transparency, solubility, texture, and durability. Sunscreen products, such as UV nano-filters, nano-TiO2 and nano-ZnO particles, can offer an advantage over their traditional counterparts due to their broad UV-protection and non-cutaneous side effects. For perfumes, nano-droplets can be found in cosmetic products including Eau de Toilette and Eau de Parfum. Nanomaterials can also be used in cosmetics as transdermal drug delivery systems. By using smart nanocontainers, active compounds such as vitamins, antioxidants, nutrients, and anti-inflammatory, anti-infective agents, can be delivered effectively. These smart nanocontainers are typically related with the smart releasing property for their embedded active substances. These smart releases could be obtained by using the smart coatings as their outer nano-shells. These nano-shells could prevent the direct contact between these active agents and the adjacent local environments. Nanocosmetics: Fundamentals, Applications and Toxicity explores the formulation design concepts and emerging applications of nanocosmetics. The book also focuses on the mitigation or prevention of their potential nanotoxicity, potential global regulatory challenges, and the technical challenges of mass implementation. It is an important reference source for materials scientists and pharmaceutical scientists looking to further their understanding of how nanotechnology is being used for the new generation of cosmetics. Outlines the major fabrication and formulation design concepts of nanoscale products for cosmetic applications Explores how nanomaterials can safely be used for various applications in cosmetic products Assesses the major challenges of using nanomaterials for cosmetic applications on a large scale