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Introduction to Photostability
A Practical Introduction to
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Dispersion in Liquids: Suspensions, Emulsions, and Foams
| Type | Course |
|---|---|
| Language | English |
| Date |
August 17, 2009
to August 18, 2009 |
| Venue |
Four Points By Sheraton 1201 K Street NW Washington, DC 20005 US |
| Chemistry Specialties |
|
| Chemistry Techniques |
|
| Contact |
American Chemical Society 1155 Sixteenth Street, NW Washington, DC 20036 US (800) 227-5558 shortcourses@acs.org |
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Help solve your colloidal, foam, and dispersion problems in this course designed for scientists and engineers engaged in research and development in the chemical, petroleum, coatings, food, electronics, pharmaceutical, cosmetics, and ceramics industries. Topics covered will include surface and interfaces, surfactants, nanoparticle technology, interparticle forces and stability, laboratory techniques, emulsion technology, dispersion processing, foam technology, and polymer stabilization.
Key Topics
* Principles of colloid and interface science relevant to the formation and stability of dispersions in aqueous and nonaqueous media.
* Surfactants – mechanisms, structure-property relations, selection guidelines.
* Fundamental concepts and laboratory techniques to study the chemical and physical properties of interfaces.
* Properties of emulsions and emulsifiers.
* The basic principles governing foam formation, inhibition, and antifoaming.
* Experimental methods to quantify particle size, charge, dispersion, stability, and rheological and electrokinetic properties.
* Methods to stabilize and destabilize both aqueous and nonaqueous dispersions.
Session titles
* Surfactant Science and Technology – Adsorption at interfaces; common anionic, cationic and nonionic surfactants; solution properties of surfactants; source and selection of surfactants.
* Spreading, wetting and adhesion – Basic principles of the nature and stability of interfaces; molecular models of interactions across interfaces; contact angles; Laplace pressures; Marangoni effects.
* Laboratory Techniques – Particle size and charge measurements; acoustic techniques; adsorption from solution; rheology.
* Suspension and Emulsion Stability – Dispersion-force attraction; steric stabilization; electrostatic repulsion; role of ionic strength and zeta potential; stability in nonaqueous media; electrosteric stabilization.
* Foam Technology – Bubble formation and stability; physical properties of foams; mechanisms and antifoaming.
* Emulsion Technology – Emulsifiers; HLB and PIT scales; physical properties of emulsions; phase inversion; comminution and attrition; commercial processing equipment.
* Nanoparticle technology – nanoparticles at interfaces; common particle synthetic techniques; surface modification; applications and processing.