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Surfactant Formulation Engineering Using Hld And Nac

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Surfactant Formulation Engineering using HLD and NAC

Surfactant Formulation Engineering using HLD and NAC Book
Author : Edgar Acosta
Publisher : Academic Press and AOCS Press
Release : 2021-09-15
ISBN : 9780128214817
Language : En, Es, Fr & De

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Book Description :

Surfactants are molecules that contain groups that are water-loving (hydrophilic) and oil-loving (lipophilic). The central question in formulations is often which of the two portions dominate the behavior of the surfactant. For many years that question was answered in terms of the surfactant structure only. However, the modern view is that the hydrophilic-lipophilic nature of the surfactant is the result of surfactant structure and formulation conditions (nature of the oil, temperature, aqueous phase composition) as captured by a semi-empirical equation called the hydrophilic-lipophilic difference (HLD). The HLD is a dimensionless number that indicate the approach to the point where the surfactant inverts its solubility from being water-soluble (negative HLD) to oil-soluble (positive HLD). The HLD alone is a good indicator of how the formulation could behave but it does not produce any formulation property that can be used to predict product performance. The net-average curvature (NAC) are a set of equations that take the value of HLD to predict the properties of the formulation, such as oil (and/or water) solubilization capacity, interfacial tension, phase diagrams, contact angle and others. The book will not only introduce the reader to HLD-NAC but also to the practical use of these concepts in numerous applications ranging from application in the petroleum industry, to environmental remediation, to food, cosmetic and pharmaceutical applications, and even nanotechnology. The last part of the book will look at the molecular origins of the empirical terms in HLD via the Integrated Free Energy Model (IFEM). Concentrates on the HLD and NAC, providing industrially-relevant examples Provides the only single depository for HLD parameters Balances theory and application, with insights from both academic and industrial authors Includes examples relevant to a wide range of fields, with practical guides on how to go from the formulation objective(s) to an actual formulation design

Oil Spill Remediation

Oil Spill Remediation Book
Author : Ponisseril Somasundaran,Partha Patra,Raymond S. Farinato,Kyriakos Papadopoulos
Publisher : John Wiley & Sons
Release : 2014-04-10
ISBN : 1118825640
Language : En, Es, Fr & De

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Book Description :

This book provides a comprehensive overview of oil spillremediation from the perspectives of policy makers, scientists, andengineers, generally focusing on colloid chemistry phenomena andsolutions involved in oil spills and their cleanup. • First book to address oil spill remediation from theperspective of physicochemical and colloidal science • Discusses current and emerging detergents used inclean-ups • Includes chapters from leading scientists,researchers, engineers, and policy makers • Presents new insights into the possible impact of oilspills on ecosystems as well as preventive measures

Surfactant Science and Technology

Surfactant Science and Technology Book
Author : Laurence S. Romsted
Publisher : CRC Press
Release : 2014-05-05
ISBN : 1439882967
Language : En, Es, Fr & De

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Book Description :

Surfactant research explores the forces responsible for surfactant assembly and the critical industrial, medical, and personal applications, including viscosity control, microelectronics, drug stabilization, drug delivery, cosmetics, enhanced oil recovery, and foods. Surfactant Science and Technology: Retrospects and Prospects, "a Festschrift in honor of Dr. Kash Mittal," provides a broad perspective with chapters contributed by leaders in the fields of surfactant-based physical, organic, and materials chemistries. Many of the authors participated in a special symposium in Melbourne, Australia, honoring Kash Mittal’s 100th edited book at the 18th Surfactants in Solution (SIS) meeting. Each chapter provides an overview of a specific research area, with discussions on past, present, and future directions. The book is divided into six parts. Part I reviews the evolution of theoretical models for surfactant self-assembly, and introduces a model for interpreting ion-specific effects on aggregate properties. Part II focuses on interactions of surfactant solutions with solid supports; uses contact angles to understand hydrophobic/hydrophilic changes in a lipid layer; uses surface tension to understand molecular arrangements at interfaces; reviews spreading phenomena; discusses pattern formation on solid surfaces; and applies tensiometry to probe flavor components of espresso. Part III discusses novel DNA-based materials, multifunctional poly(amino acid)s–based graft polymers for drug delivery, and polymeric surfactants for stabilizing suspensions and emulsions. Part IV introduces farm-based biosurfactants from natural products and "greener" biosurfactants from bacteria. Part V explores lyotropic liquid crystals and their applications in triggered drug release; microemulsion properties and controlled drug release; the role of hydrotopes in formulations and in enhancing solubilization in liquid crystals; the potential of ionic liquids to generate tunable and selective reaction media; and provides an overview of stimuli-responsive surfactants. Focusing on emulsions, Part VI reviews the design of emulsion properties for various commercial applications, the role of surfactants in the oil and gas industries, and surfactant mechanisms for soil removal via microemulsions and emulsification.