Amphoteric surfactants

It is interesting to note that in the case of amphoteric surfactants, the hydrophobic fatty chain is attached to a hydrophilic group containing both positive & negative charges.

Non ionic surfactants

Do you know anything about non ionic surfactants? Remember that in the case of non ionic surfactants, the hydrophobic chain is attached to an uncharged hydrophilic chain or group.

Difference between anionic surfactants & cationic surfactants

In the case of anionic surfactants the fatty hydrophobic chain is attached to a hydrophilic negatively charged group. But for cationic surfactants the fatty hydrophobic chain is attached to a hydrophilic positively charged group.

Applications of cationic surfactants

The applications of cationic surfactants are

• Fabric softening
• Antibacterial agents
• Corrosion inhibition
• Cosmetic lotions
• Additives in petroleum applications

Name the fattyacid esters used in hand creams & lotions

• Butyl stearate
• Isopropyl palmitate
• Isopropyl myristate

Another name for surfactants

• Surface active agents

Mention the important properties involved in the cleansing action of soap

• Lowering of surface tension
• Emulsifying fats & oils