Hi Abhishek,

Oil and water solubilization parameters for microemulsion are given respectively by Vo/Vs and Vw/Vs with Vo, volume of oil, Vw, volume of water, and Vs volume of surfactant as you mentionned. More precisely, it is better to take active matter in order to compare surfactants. Details are in Bourrel and Schechter book "Microemulsions and Related Systems" Technip 2010, and a good application example in Bera et al. 2011 Colloids and Surfaces A:  383 (2011) 114–119.

Best regards

Good Morning Manuel,

Thank you so much for the answer. Better we consider an example- suppose we take 0.01 g of surfactant (active matter) in the aqueous phase and density of the surfactant is 0.8 g/cc. If 0.2 mL of the oil phase goes into micro-emulsion then its oil solubilization ratio Vo/Vs will be 16. Am I correct.

Regards,

Abhishek

Good morning Abhishek,

I obtain the same result ! 

Regards

Manuel,

Thank you, so much. Looking forward to more help from you in the future. Good luck.

Regards,

Abhishek

The fundamental assumption taken during calculation of solubilization ratio is that all the surfactant is present in the microemulsion phase and not in the excess oil or excess water phase.

SO you have to calculate the volume of oil solubilized inside the microemulsion using material balance and then divide it by the surfactant volume.

Thanks Neetish.

@Manuel,

Now How to calculate IFT from Stabilization parameters ?

All the researchers are referring to CHUN HUH 1979 paper but no solid model is presented.

Khaled Z. Abdelgawad Still that is the most widely used model, if you can't measure in the lab