Stable polymer aqueous/aqueous emulsion system and uses thereof

A stable aqueous/aqueous emulsion system, which is prepared with hydrophilic polymers by the method comprising steps of:

• a) selecting appropriate polymeric materials for dispersed phase and continuous phase which are immiscible, biocompatible and have biased partition to the active ingredients to be encapsulated;
• b) selecting appropriate surface modifiers which are charged, non-toxic, and possessing a moderate interfacial tension between the above two phases;
• c) developing phase diagram for the above;
• and
• d) dispersing the dispersed phase into the continuous phase under an appropriate shear stress.