Scientists developed a new kind of plastic that decomposes in seawater in a few hours

The team combined two simple monomers: sodium hexametaphosphate, used in food additives and fertilizers, and guanidinium sulfate, which can be obtained easily from natural raw materials. When these two monomers are mixed in water at room temperature, they form two layers - liquid and gel. By drying the gel, you get a glassy, transparent plastic. Although plastic is resistant to fire and heat, when it comes into contact with salt water, it breaks down into monomers again in just a few hours.