Double Emulsion using premix membrane emulsification Group members

Double Emulsion using premix membrane emulsification Group members Wisal Khderat Raya Bsharat Hiba Qassrawi Aseel Qaffaf Submitted to: Dr. Hassan Sawalha

project Outline Introduction � What is double emulsion? � Where we can apply Double Emulsion? � Experimental work � Results and discussion � Conclusion �

What is Emulsion? An emulsion is a mixture of two immiscible phases of which one (i. e. oil) is dispersed in another (i. e. water) which is stabilized by a surfactant.

Types of Emulsion � Single emulsion

� Multiple (complex) emulsions

Micro emulsion

� Nano emulsions

What is Double Emulsion? DE involve the preliminary emulsification of two phases, followed by a secondary emulsification into a third phase leading to a three phase mixture.

Double Emulsion Application food industry � cosmetics industry � pharmaceutical industry �

Emulsification method � Traditional method 1) pressure Homogenizer 2) Colloid mill + 3) Mechanical strring Oil water w/o/w

Membrane emulsification.

EXPERIMENTAL WORK � Materials water+span 80+sugar or ethanol Oil+tween 20 Na. Cl+ water

Solution preparation + Water+Na. Cl mixing Oil+ span 80 + W/O Water+sugar+tw een 80 mixing w/o/w

DE Test sample

Test measurements 0, 007 0, 006 � Na. Cl release test � Viscosity test � Density test � Particle size test R 2 = 0, 9809 conc 0, 005 0, 004 0, 003 0, 002 0, 001 0 0 200 400 600 cond 800 1000 1200

Parameters to study � Effect of trans-membrane pressure � Effect of passes’ number � Effect of viscosity � Effect of ingredients’ concentration � Effect of span percentage

Results and discussion Effects on droplets’ size

Effect of trans-membrane pressure

Effect of passes’ number

Effect of viscosity

Effect of ingredients

Effect of span percentage

Effects on Na. Cl release

Effect of trans-membrane pressure

Effect of ingredients

A problem How to combine all previous parameter in one? ?

Re The solution *v*dp

Reynolds number vs. d/dp

Conclusion Many methods are used to get double emulsion with premix membrane emulsification as the best one. � Three different types of continuous phase were used with different concentrations. � Fructose gave the best results and it was the most stable one. � All the studied parameters were combined in one dimensionless relation. �

Take home message Less than 1 micron in diameter was obtained in this study in which it is the smallest size obtained in the literature

Thank you ^_^