![]() ![]() These are useful as water washable drug bases. These are [referred for oral administration and cosmetics. This emulsion is generally formed if the aqueous phase constitutes more than 45 % of the total weight and a hydrophilic emulsifier is used. Oil in water (o/w) : Oil droplets are dispersed in a continuous aqueous phase. ![]() Oil-in-water (O/W) Water-in-oil (W/O) Multiple emulsions Oil-in-water-in-oil (O/W/O) Water-in-oil-in-water (W/O/W) Micro emulsions TYPES OF EMULSIONS : 1. The emulsifying agent ( black film) places it self on the interface between phase A and phase B and stabilizes the emulsion.ĥ Types of emulsions Simple emulsions (Macro emulsions) An emulsion of phase B dispersed in Phase A C. The droplet phase is called the dispersed phase or internal phase and the liquid in which droplets are dispersed is called the external (continuous phase).Ī.: Two immiscible liquids not emulsified B. An emulsion is a thermodynamically unstable system consisting of at least two immiscible liquid phases one of which is dispersed as globules in the other liquid phase stabilized by a third substance called emulsifying agent. Theory of emulsification Additives for formulation of emulsion Formulation of emulsions Emulsification techniques Stability of emulsions Evaluation of emulsionsģ What is an emulsion ? An emulsion is a thermodynamically unstable system consisting of at least two immiscible liquid phases one of which is dispersed as globules in the other liquid phase stabilized by a third substance called emulsifying agent. 2 EMULSIONS Definition Classification Applications ![]()
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