Foaming agents are substances whose function is to produce foam and porous structure.
They are surfactants or porophors that cause the formation and stabilisation of foam in various products. This is due to the fact that a foaming agent reduces the surface tension of the liquid and increases the colloidal stability. The air pressed into the mixture is covered with a surfactant membrane in an attempt to escape to the surface of the liquid. This process results in the formation of numerous foam-forming bubbles.
Foaming is an important process especially in industrial applications such as fire extinguishers, washing liquids, cosmetics and gypsum plasterboard. Due to their ability to create foam, the foam-forming agents have been used in the production of aerated concrete, plastics and packaging materials, as well as in the mining and textile industry.
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