Which polymer is used for food wrap, bottles, and drain pipes?

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

Answer: (B)

PVC, polyvinyl chloride, is used in a variety of everyday applications because it can be produced in both flexible and rigid forms. Flexible PVC, achieved with plasticizers, can be made clear and clingy, which is useful for some food wraps that need to seal and protect food. PVC is also used for certain bottles where clarity and chemical resistance are beneficial. For plumbing, rigid PVC (unplasticized PVC) is a staple for drain pipes due to its stiffness, durability, chemical resistance, and low cost. These combined properties make PVC the polymer that fits all three uses—food wrap, bottles, and drain pipes. Other polymers can cover one or two of these roles, but PVC best fits all three together.