Emulsion Abd Suspension Stability Flashcards
1
Q
What do emulsions require and how is this produced?
A
Emulsifier
Produced by homogenisation - input of energy
2
Q
Do emulsions have a higher energy input compared to unmixed water and oil?
A
Yes
3
Q
Where does the emulsifier position itself?
A
Interface between the two phases
4
Q
Are Intramuscular o/w or w/o?
A
W/o
5
Q
What are the consequences of disperse system instability?
A
Flocculation
Coagulation
Coalescence
6
Q
Why are particles of less than 2 microns constantly moving?
A
Brownian motion
7
Q
How does Va the force of attraction due to VDWs change as a function of H?
A
1/H
8
Q
What is the colloidal particles charge dependent on?
A
Ion dissolution
Ion adsorption
9
Q
What is a colloid?
A
A disperse system in which one phase is in the form of tiny particles or droplets
