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2. Parameters determining emulsion morphology
2.1 Similarities between equilibrium and emulsified O/W systems
The morphology of an emulsion is largely determined by the phase behavior of the same S/H/E system at equilibrium, and therefore by the physico-chemical formulation expressed by the HLD value. Three other parameters are also involved:
the relative proportions of water and oil ;
the concentration of the surfactant and its ability to form liquid crystals;
the experimental protocol used to prepare the emulsion.
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Parameters determining emulsion morphology
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Emulsifying an epoxy resin
For the past decade, water-emulsified resins have been replacing resins dissolved in volatile organic solvents. This is the case for epoxy resins, which cannot easily be prepared in latex form by emulsion polymerization. Epoxy-bisphenol A resins have a high viscosity (100 Pa · s at 70 ˚C) which makes it virtually impossible to emulsify them in water by means of strong agitation. As with alkyd, polyurethane or...
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