Which type of foam will not dissolve in polar solvents?

Which type of foam will not dissolve in polar solvents?

• A. AFFF foam
• B. AR (alcohol resistant) foam
• C. Protein foam
• D. Fluoroprotein foam

Answer: (B)

Alcohol Resistant foams are built to withstand polar solvents. When fuels or liquids contain alcohols or other polar components, these foams use specialized additives and polymer networks that form a protective barrier and help the foam blanket stay intact. This prevents the polar solvent from dissolving or breaking down the foam film, so the foam continues to blanket and cool the fuel effectively. Other foams rely on different film-forming mechanisms or protein matrices that are more vulnerable to polar solvents; polar solvents can dissolve or disrupt their structure, reducing effectiveness. That’s why alcohol resistant foam is the best choice for scenarios involving polar solvents.

Alcohol Resistant foams are built to withstand polar solvents. When fuels or liquids contain alcohols or other polar components, these foams use specialized additives and polymer networks that form a protective barrier and help the foam blanket stay intact. This prevents the polar solvent from dissolving or breaking down the foam film, so the foam continues to blanket and cool the fuel effectively.

Other foams rely on different film-forming mechanisms or protein matrices that are more vulnerable to polar solvents; polar solvents can dissolve or disrupt their structure, reducing effectiveness. That’s why alcohol resistant foam is the best choice for scenarios involving polar solvents.