About the Instructor(s)
Ramanathan Nagarajan (NAGU)
Emeritus Professor of Chemical Engineering, The Pennsylvania State University
Professor Nagarajan had a 26-year long teaching/research career at The Pennsylvania State University from which he retired in 2005 as Emeritus Professor of Chemical Engineering. He has continued his research career with the US Army, currently holding the position of Senior Research Scientist for Soldier Nanomaterials.
About the Course
Help solve your surfactant, emulsion, foam, and suspension problems in this course designed for scientists and engineers engaged in research and development in the chemical, petroleum, coatings, food, electronics, pharmaceutical, cosmetics, and personal care products industries.
Topics covered will include basic concepts in colloid science, surfactants, intermolecular and colloidal forces, forming emulsions and their stability, making and braking foams, stability of suspensions, experimental techniques to study dispersions
- Language and basic principles of colloid and interface science relevant to the formation and stability of disperse systems in aqueous and nonaqueous media.
- Surfactants – micelles and microemulsions and ability to predict their occurrence from surfactant molecular structure, surface and interfacial tension lowering
- Methods to stabilize and destabilize both aqueous and nonaqueous suspensions.
- Designing emulsion systems based on fundamental molecular concepts and optimal selection of emulsifiers.
- Basic principles to create foams, their stability and methods of antifoaming.
- Experimental techniques to study disperse systems for quantifying particle size, charge, stability, and rheological and electrokinetic properties.
What You Will Learn
- Technical terminologies of disperse systems
- Experimental techniques to study disperse system
- How to relate observable dispersion properties to fundamental molecular features
- An industrial approach by examining practical examples
- How to apply what you learn to your own related problems
- Combination of theory and experimental phenomena to understand making and breaking of disperse system
- Molecular insights to solve industrial problems centered on disperse systems on your own
Who Should Attend
Scientists and engineers engaged in research and product development in the chemical, petroleum, coatings, food, electronics, pharmaceutical, cosmetics, and personal care products industries. Scientists and marketing specialists from organic chemical industries connected to surfactants and polymers synthesis. A bachelor’s degree in chemical sciences or related fields will be an advantage. Prior industrial experience is not required and new entrants to industry are invited to attend.
Course Outline
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Introduction
Colloids, Surfactants, Surfactants at interfaces, Surfactants in bulk solutions, Block copolymers, Block copolymers in solution and at interfaces, Disperse systems, Thermodynamic and kinetic stability
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Colloidal Forces and Thermodynamics
Intermolecular forces, Solvation forces, Van der Waals interactions between surfaces, Electrostatic interactions between surfaces, Thermodynamics of solutions, Hildebrand Solubility parameters, Flory theory of polymer solutions
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Surfactants
Critical micelle concentration, Tanford’s principle of opposing forces, IMN Molecular packing model, Predicting aggregate size and shape, Behavior of surfactant mixtures, Phenomenon of solubilization, Solubilizate uptake in surfactant micelles, What factors control solubilization?, Surfactants in non-aqueous media, Droplet and bicontinuous microemulsions, Block copolymer micelles and solubilization
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Concepts in Colloid Science
Adsorption of surfactant at interfaces, Lowering of surface and interfacial tensions, Efficiency and effectiveness of surfactants, Dynamic surface and interfacial tensions, Contact angle, wetting and spreading on surfaces, Laplace pressure, Osmotic pressure
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Suspensions
Concept of stability, Electrostatic stabilization of suspension DLVO, Stability ratio and applications, Steric stabilization of suspensions, Factors affecting steric stabilization, Flocculation - slow and rapid, Critical flocculation point, Particle charging in Nonpolar Solvents
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Emulsions
Simple and multiple emulsions, Hydrophile-lipophile balance HLB, Phase inversion temperature PIT, Emulsion inversion point EIP, Cohesive Energy Ratio CHR, Critical Packing Parameter CPP, Formulation-composition map for emulsion design, HLD (hydrophilic–lipophilic deviation) concept for emulsion design
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Emulsion Stability and Breakdown
Emulsion instability pathways, Interaction forces and emulsion stability, Creaming and sedimentation, Flocculation, Coalescence, Ostwald ripening, Phase inversion, Inverting inverse emulsion, Breaker surfactants, Factors influencing emulsion stability
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Foams
Description of foams, Factors affecting foam stability, Mechanism of action of surfactants in foam stabilization, Selecting surfactants as foaming agents, Description of anti-foaming, Mechanism of action of surfactants in anti-foaming, Selecting surfactants to break foams
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Experimental Techniques to Study Disperse Systems
Static and dynamic light scattering, Intrinsic viscosity, Sedimentation equilibrium, Electrokinetics, Rheology, Chromatography
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Conclusions
Colloids, Surfactants, Surfactants at interfaces, Surfactants in bulk solutions, Block copolymers, Block copolymers in solution and at interfaces, Disperse systems, Thermodynamic and kinetic stability
Intermolecular forces, Solvation forces, Van der Waals interactions between surfaces, Electrostatic interactions between surfaces, Thermodynamics of solutions, Hildebrand Solubility parameters, Flory theory of polymer solutions
Critical micelle concentration, Tanford’s principle of opposing forces, IMN Molecular packing model, Predicting aggregate size and shape, Behavior of surfactant mixtures, Phenomenon of solubilization, Solubilizate uptake in surfactant micelles, What factors control solubilization?, Surfactants in non-aqueous media, Droplet and bicontinuous microemulsions, Block copolymer micelles and solubilization
Adsorption of surfactant at interfaces, Lowering of surface and interfacial tensions, Efficiency and effectiveness of surfactants, Dynamic surface and interfacial tensions, Contact angle, wetting and spreading on surfaces, Laplace pressure, Osmotic pressure
Concept of stability, Electrostatic stabilization of suspension DLVO, Stability ratio and applications, Steric stabilization of suspensions, Factors affecting steric stabilization, Flocculation - slow and rapid, Critical flocculation point, Particle charging in Nonpolar Solvents
Simple and multiple emulsions, Hydrophile-lipophile balance HLB, Phase inversion temperature PIT, Emulsion inversion point EIP, Cohesive Energy Ratio CHR, Critical Packing Parameter CPP, Formulation-composition map for emulsion design, HLD (hydrophilic–lipophilic deviation) concept for emulsion design
Emulsion instability pathways, Interaction forces and emulsion stability, Creaming and sedimentation, Flocculation, Coalescence, Ostwald ripening, Phase inversion, Inverting inverse emulsion, Breaker surfactants, Factors influencing emulsion stability
Description of foams, Factors affecting foam stability, Mechanism of action of surfactants in foam stabilization, Selecting surfactants as foaming agents, Description of anti-foaming, Mechanism of action of surfactants in anti-foaming, Selecting surfactants to break foams
Static and dynamic light scattering, Intrinsic viscosity, Sedimentation equilibrium, Electrokinetics, Rheology, Chromatography
Dates, Locations, and Prices
Five for four! Register five people for one course, one person for five courses, or any combination in between and your fifth registration is free. The free registration will be the course of the lowest price. Please note: This discount cannot be combined with any other discount offered.
Mar 14 - Mar 18, 2022
Virtual Delivery Due to COVID-19 (3/14
Course Times: 11:00 AM - 12:00 PM and 2:00 -5:00 PM ET (each day). Course fee includes a course manual.