Understanding the defoaming mechanism of defoamers
The reason for the foam to break is that the defoamer reduces the tension of the local foam. How does it break?
1. These substances are generally less soluble in water, and the reduction in surface tension is manifested in the reduction of local tension, which begins to extend from the local to the whole, diffuses, and finally breaks.
2. The defoamer promotes the discharge of the liquid film, reduces its concentration, weakens the stability of the foam, and plays a defoaming role.
3. The defoamer electrolyte disintegration effect can disintegrate the double electric layer of the surfactant and cause the bubbles to burst.
4. Hydrophobic fixed particles are added to the defoamer. Because the hydrophobic fixed particles are hydrophilic and soluble in water, they quickly enter the water phase, thereby achieving the purpose of defoaming.
Defoamers are widely used in various foods and beverages. They have advantages and disadvantages. Therefore, when choosing various products containing defoamers, we must follow the principles of health and benefit, correctly understand the role of defoamers, and ensure safe and reliable consumption!
