Network optimization information:

The biodegradability of plastics varies. PVC is resistant to biodegradation, so PVC pipes are used to treat sewage. Moreover, some packaging materials are under development and are easily degraded once exposed to the environment. "Polymers have a fast biodegradation rate because their ester bonds are easily damaged by water, such as polycaprolactone, other polyesters and aromatic aliphatic esters. Poly-3-hydroxybutyrate, recycled polylactic acid And polycaprolactone as a representative. There are also other types of cellulose, such as cellulose acetate and cellulose (nitrocellulose).
 

The decomposition rate of plastics is slower under low oxygen conditions. But in a specially designed compost pile, the decomposition process will speed up. Starch-based plastics can be degraded within 2-4 months in a household compost bin, while polylactic acid basically does not decompose and has a higher decomposition temperature. Polycaprolactone and polycaprolactone-starch complex decompose slowly, but the starch component will leave polycaprolactone with porous and high specific surface area to accelerate the decomposition process, but it will take several months. "In 2016, a degradable PET named Enterobacter sakazakii was discovered.