Does Polystyrene Dissolve in Water?

Styrofoam is readily soluble in acetone, but is not soluble in water. In recent years, concern for the environment has led to the development of biodegradable plastics, including biodegradable packing peanuts. These are made primarily of starch, which is a polymer of glucose.

How do you dissolve polystyrene?

All you need to do is to pour a bit of acetone into a bowl, and place Styrofoam beads, packing peanuts, chunks of foam, or even a Styrofoam cup in the container. The Styrofoam will dissolve in the acetone much like sugar dissolves in hot water.

What happens to polystyrene in water?

What Happens with Expanded Polystyrene Insulation in Contact with Water? ... EPS is resistant to water and moisture. This means that it does not absorb them and that its insulating performance is not compromised when in contact with these elements.