THE EFFECT OF ORGANIC ADDITIVES WITH MULT IPOLAR GROUP ON THE CLOUD POINT OF NONIONIC SURFACTANTS

The effect of formic acid, acetic acid, oxalic acid, methanol, ethanol , propanol, glycol, glycerol and glucose on the cloud point of nonioni c surfactants Triton X-100 and Triton X-114 has been measured. The add ition of lower aliphatic acids and alcohols increases the cloud point. The longer the carbon chain length, the stronger the effect. The addi tion of glycol increases the cloud point slightly, while the added oxa ylic acid shows no significant effect. However, the addition of glycer ol and particularly, glucose, decreases the cloud point drastically. T hese effect are explained in terms of surfactant solubility.