Surface activity and hard water resistance of AES70

Aliphatic alcohol polyoxyethylene ether sodium sulfate (AES) is a white or light yellow gel paste, easily soluble in water. It has excellent decontamination, emulsification and foaming properties. Easy to biodegrade, biodegradation degree is greater than 90%. Widely used in shampoo, bath liquid, dishwashing detergent, composite soap and other washing cosmetics; Used in textile industry wetting agent, cleaning agent, etc. Anionic surfactant.

About the surface activity and water resistance of fatty alcohol polyoxyethylene ether sodium sulfate (AES) :

1. Surface activity of AES:

AES has strong wetting, emulsifying and cleaning power. Its surface tension is low and its critical concentration is small.

The data show that the surface tension and wetting force are affected by the length of carbon chain of the bonded ethylene oxide. The surface tension and force of ethylene oxide increase with the increase of the addition mole number. In addition, as the concentration of the liquid increases, the surface tension decreases, but when the critical glue is reached, the surface tension will not decrease again although the concentration increases. The wettability of ethylene oxide increases when the number of added molecules increases, and decreases when the number of added molecules increases.


2. AES hard water resistance:

AES has very good resistance to hard water, and its compatibility with hard water is very good. The stability index of calcium and magnesium ions is very high, and the dispersion of calcium soap is very good.

According to the data reported: carbon chain C12-14 alcohol AES in 6300ppm seawater, its (seawater) calcium it dispersion of 8%. In 330ppm hard water, its calcium dispersion is 4%. Calcium ion stability index > 10000ppmCaCO3. AES calcium ion stability index is very high, because its molecules have good tolerance to calcium (magnesium) ions, that is, it can generate organic calcium (magnesium) salts with calcium (magnesium) ions, and the calcium (magnesium) salts they generate are easy to combine with hydrophilic groups and react to generate calcium (magnesium) salt compounds that are easily dissolved. Therefore, the water solubility of AES is very good, and can be used for low temperature washing. Tests show that the water solubility of C1-14 alcohol AES is superior to that of C14-1 alcohol or 16-18 alcohol AES. The solubility of AES in water increases with the increase of molar number of condensed ethylene oxide.

Post time: Apr-12-2024