polymers and surfactants Flashcards
1
Q
what is a surfactant
A
surface active agents and amphiphiles consists of a hydrophobic segment and hydrophilic segment
2
Q
4 classes of surfactants
A
anionic, cationic , non-ionic and zwitterionic
3
Q
what happens at air -water interface
A
the hydrophilic portion remains in water and hydrophobic part remains in the air
4
Q
what is the critical micelle concentration
A
the surfactant concentration at which micelles begin to form
