We want to nanoencapsulate our pesticide using the following protocol; but we dont have AOT surfactant. So, what can I use instead of AOT in the following protocol?

Sodium alginate solution in water was emulsified into dioctyl sodium sulfo-succinate (AOT) solution in methylene chloride  by sonication for 1 min over ice bath. The primary emulsion was further emulsified into 150 mL of aqueous PVA solution by sonication for 1 min over ice bath to form a secondarywater-in-oil-in-water emulsion. The emulsion was stirred usinga magnetic stirrer, and 50 mL of aqueous calcium chloride solution  was added gradually to the above emulsion. The emulsion was stirred further at ambient conditions for 18 h and then under vacuum for 1 h to evaporate methylene chloride.

Thanks,