My graduation project

2.  Introduction
 What is double emulsion?
 Where we can apply Double Emulsion?
 Experimental work
 Results and discussion
 Conclusion

3. 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.

4.  Single emulsion

6.  Traditional method
1) pressure Homogenizer
2) Colloid +
mill
3) Mechanical strring
/ /

8.  Materials
NaCl+ water

10. Water+NaCl
Solution preparation
+
mixing
+
/
Water+sugar+t
ween 80
mixing
w/o/w

11. DE
Test sample

13. 0.007
 NaCl 0.006
release test
0.005
 Viscosity test
0.004
 Density test
y = 6E-06x - 0.0004
R² = 0.9809
0.003
0.002
 Particle size test
0.001
0
0 200 400 600 800 1000 1200
conc
cond

14. Effects on droplets’
Size
Effects
on NaCl release

15. How to combine all previous parameter in
one??

16. Re
*v*dp


17. 1.2
1
0.8
0.6
0.4
0.2
0
Decreasing glucose and fructose
conc.
Increasing glucose pressure
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14
d/dp
Re
conc glucose
pressure glucose
conc fructose
pressure fructose
Decreasing fructose pressure

18.  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.

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

20. Thank you ^_^