FRAGRANCE EMULSIONS STABILIZED BY A TRIBLOCK COPOLYMER

The phase diagram was determined of the system a fragrance oil, phenethyl alcohol, a commercial triblock copolymer, PE/L101, and water. The stability of emulsions containing 95 wt% water and various amounts of the fragrance and polymer was investigated both visually and with the aid of an optical microscope. The stability of the two-phase emulsions was explained through the interfacial behavior of the polymer and the density change of the oil phase. Double emulsions were found to form when the oil phase composition is close to that of the L2 phase with maximum water solubilization.