What are biodegradable materials?
Biodegradable materials are mainly bio-based natural materials that go through processes of fermentation, chemical synthesis or monomer polymerization of fossil products to make degradable polyester. In general, polymers made by renewable natural resources, such as microorganisms, plants and animals, are the most environmental friendly. The traditional plastic materials, such as PE, PVC, PS and PP, cannot be degraded into H2O and CO2 by microorganisms. When biodegradable products are exposed to the air, they will not be degraded; only when sufficient humidity, oxygen and the appropriate amount of microorganisms are present, which exists in natural landfills or manure, will the biodegradable products breakdown into H2O and CO2 by microorganisms in 20-45 days.
