According to the raw material sources of biodegradable plastics, there are two types of Biodegradable Plastics: Bio based and petrochemical based. PBAT is a kind of petrochemical based biodegradable plastics.
From the results of biodegradation experiment, PBAT can be completely degraded under normal climate conditions and buried in soil for 5 months.
If PBAT is in seawater, microorganisms adapted to high salt environment exist in seawater. When the temperature is 25 ℃ ± 3 ℃, it can be completely degraded in about 30-60 days.
PBAT biodegradable plastics can be biodegraded under composting conditions, other conditions such as anaerobic digestion device, and natural environment such as soil and seawater.
However, the specific degradation situation and degradation time of PBAT are related to its specific chemical structure, product formula and degradation environmental conditions.