Surfactant Formulation Engineering using HLD and NAC

Edgar Acosta, Jeffrey Harwell, David A. Sabatini

• Publisher: Academic Press and AOCS Press
• Year: 2025
• eBook ISBN: 9780128214824
• Edition: 0
• Topic: Technology & Engineering
• Subtopic: Chemical & Biochemical Engineering
• Index: Technology & Engineering

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.Surfactant Formulation Engineering using HLD and NAC 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

Table of contents

• Front Cover
• SURFACTANT FORMULATION ENGINEERING USING HLD AND NAC
• SURFACTANT FORMULATION ENGINEERING USING HLD AND NAC
• Copyright
• Dedication
• Contents
• Contributors
• Acknowledgments
• 1 - The hydrophobicity of surfactants and surfactant–oil–water (SOW) systems
• 2 - Effect of oils and additives on the hydrophilic-lipophilic difference (HLD)
• 3 - Design aspects and practices of surfactant formulations used in chemical EOR and surfactant-enhanced aquifer re ...
• 4 - HLD-guided surfactant system design for enhanced oil recovery applications
• 5 - Detergency system design: From hydrophile–lipophile balance (HLB) to hydrophilic–lipophilic deviation (HLD)
• 6 - HLD-guided design of vegetable oil extraction technology
• 7 - Formulation of microemulsion-based biofuels via the HLD framework
• 8 - Catastrophic inversion of epoxy emulsions
• 9 - Using HLD as a framework for solutions without your parameters
• 10 - High-throughput HLD-guided formulation design for agrochemical formulations and other applications
• 11 - High throughput HLD surfactant characterization and formulation
• 12 - A formulator's guide to HLD-NAC
• 13 - Net-Average-Curvature (NAC) fundamentals
• 14 - Basic HLD and NAC applied to household cleaner formulation—Advantages and limitations
• 15 - Engineering cold water detergents with the HLD-NAC
• 16 - Engineering separation processes with the HLD-NAC
• 17 - Engineering nanoscale materials with the HLD-NAC
• 18 - Microemulsion flash calculations using an HLD-NAC-based equation of state
• 19 - The integrated free energy model (IFEM) and the HLD-NAC
• Index
• Back Cover