The concept of biodegradation is mainly put forward from the environmental absorptive performance of waste plastics. Bio base is a concept put forward from the perspective of raw material source.
Biodegradable plastics can become carbon dioxide and water under certain conditions after being used and discarded. The raw materials of bio-based plastics are mainly renewable resources such as starch and cellulose. Although most bio-based plastics are biodegradable, bio-based plastics are not necessarily bio-degradable, and bio-degradable plastics are not necessarily bio-based plastics.
The main method for evaluating the biodegradability of plastics in the world is the composting method. Compost contains rich sources of microorganisms, which can macroscopically reflect the biodegradation of plastics in the natural environment to a certain extent. performance.
