Which polymer is commonly used for nonstick cookware surfaces?

• A. Polytetrafluoroethylene
• B. Polyethylene
• C. Polystyrene
• D. Polyvinyl chloride

Answer: (A)

Nonstick surfaces work because they use a polymer that has an extremely slick, low-adhesion surface and can withstand cooking conditions without reacting with food. Polytetrafluoroethylene fits that need perfectly: its fluorinated carbon structure creates a surface where food molecules don’t stick easily, so ingredients slide off with little effort. It’s also chemically inert, resisting acids and bases found in foods, and remains stable under typical cooking temperatures.

Other polymers don’t provide the same combination. Polyethylene is not optimized for high-heat cooking and doesn’t offer the same durable nonstick behavior. Polystyrene and polyvinyl chloride aren’t suitable for cookware surfaces because they don’t combine the necessary heat stability with a truly nonstick, food-safe surface, and PVC can release harmful compounds when heated.