What is photodegradable?
The process whereby ultraviolet radiation in sunlight attacks a chemical bond or link in the polymer or chemical structure of plastic. The polymer chain “breaks” at this link and disintegrates into smaller and smaller pieces. These small pieces are hydrocarbons that can be a good mulch (a layer of loose material on the ground around plants that prevents evaporation of water from soil and helps stop the plants’ roots from freezing).