Aerobic biodegradability of citrate ester plasticizers and plasticized PLA films in simulated soil and compost environments.

摘要

Laboratory-scale bioreactors were used to assess the aerobic biodegradability of citrate ester plasticizers in simulated soil and compost environments. The plasticizers included triethyl (C2) and tri-n-butyl (C4) citrate and their acetylated counterparts (A2 and A4, respectively). The biodegradability (mineralization) of the citrate esters was essentially complete at low concentrations (i.e., 0.8 to 3.2 mg plasticizer g