1 Emulsion Formation, Stability, and Rheology
Coalescence This refers to the process of thinning and disruption of the liquid film between the droplets with the result of fusion of two or more droplets into larger ones The limiting case for coalescence is the complete separation of the emulsion into two distinct liquid phases The driving force for coalescence is the surface or film
Emulsions –Part 2
coalescence is not a single stage process but comprises at least four elementary steps: • contact at a distance that allows aattractive interaction, • the drainage of the continuous phase film between the drops, • the rupture of the film, • the collapse of the droplets nowadays aggregation processes
Emulsion Processing - Homogenization
Disruption Coalescence 12 Factors Affecting Droplet Size: Emulsifier Concentration 0 2 0 4 0 6 0 8 1 1 2 1 4 0 0 2 0 4 0 6 0 8 Once the emulsifier concentration
Emulsions - Max Planck Society
This makes an emulsion very prone to coalescence processes which lead to a decrease in ∆A and subsequently in ∆W The conclusion is straightforward that ultimate stability against coalescence processes is only achieved if s approaches zero ∆ =σ⋅∆W A The increase in the energy of an emulsion compared to the non-
LECITHINS - Cargill
to prevent water coalescence during heating, while keeping spattering to a minimum In gravies, soups and sauces, lecithin’s stabilizing, emulsifying and dispersion properties can help create the consistent, smooth textures consumers expect It can also be used as a release agent, serving as a nonstick barrier between foods and contact surfaces
Tack CoatBest Practices
binder, water, and an emulsifying agent •Evaporation leads to coalescence DE MD DC MA NH RI HI PR 20 •Dilution
2 Definition of Environmental Stress Cracking (ESC)
2 Definition of Environmental Stress Cracking (ESC) Environmental stress cracking (ESC) in plastics means the failure at about room temperature due to continuously acting external and/or internal stresses in the presence of surface active substances (known as stress cracking agents) such as alcohols, soaps, dyes, agents containing moisture
Faculté de médecine Département de Pharmacie Laboratoire de
Coalescence Fusion complète de plusieurs globules préalablement Autres additifs de stabilisation Agent épaississant: en augmentant la viscosité de la
CHAPTER 11 EMULSION BREAKING
active agent or neutralization of the charged oil droplet 2 Flocculation: This is agglomeration of the neutralized droplets into large, separable globules Traditionally, sulfuric acid has been used in oily waste treatment plants as the first step in emulsion breaking Acid converts the carboxyl ion in surfactants to
Agent-Oriented Methodologies
agent systems through middleware that complies with the FIPA specifications and through a set of graphical tools that supports the debugging and deployment phases The agent platform can be distributed across machines (which do not even need to share the same operating system) and the configuration can be controlled via a remote GUI
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