Biodegradable plastics are plastics that interact with microorganisms (such as bacteria/molds/algae, etc.) to degrade into carbon dioxide, water and other small molecules or low-molecular compounds under natural conditions such as soil and sand. Degradable plastics are mainly divided into photodegradable plastics, biodegradable plastics, and photobiodegradable plastics. Photodegradable plastics need sufficient light to degrade, which brings great limitations to production, so the promotion of photodegradable plastics is not good.
There are dozens of types of biodegradable plastics, and the varieties that can be mass-produced and industrialized are: polyhydroxy fatty acid esters synthesized by microbial fermentation, chemically synthesized polylactic acid (PLA), polycaprolactone, diol dicarboxylate Acid aliphatic polyester (PBS), aliphatic/aromatic copolyester, CO2/epoxy compound copolymer (APC), polyvinyl alcohol (PVA), etc., natural polymer starch-based plastics and their biodegradable plastic blends Materials, plastic alloys, etc.
