Investigation on O/W emulsion stability at constant HLB and different mixed emulsifiers

It is obvious that the chemical nature of emulsifiers and their amounts has very important role on O/W emulsion properties. HLB is a quantitative parameter restricted the scope of emulsifier selection during an emulsification process. On the other hand knowing the HLB as a sole parameter is not sufficient and the stability of emulsions is dependent on some other parameters. In this research we have used 6 coupled of low HLB and high HLB emulsifier which the mixed emulsifiers had a constant HLB equal to 12. At the last it has concluded the hydrophobic low HLB emulsifier has more influence on stability than the hydrophilic high HLB ones. Also stability can be deduce from same chemical structure of emulsifier and disperse phase.