A 80 mL stock solution of (W/W) all-aqueous emulsion was prepared using dextran (Dex, 500 kDa, 32.5 mg/mL, Pharmacia T500) and polyethylene glycol (PEG, 20 kDa, 70 mg/mL, Sigma-Aldrich) dispersed in water. 5 mL of this emulsion were further poured in different tubes. Then, hexadecane and CTAB (initially dispersed in water at a concentration of 5%), both from Sigma-Aldrich were added and mixtures were submitted to ultrasoniation on a VibraCell SonicMaterials Inc, Danbury, Connecticut, USA, power 4, for 30 seconds.