At their optimal operating temperatures, LCC (65 °C) yielded 560-fold more TPA than Dura (37 °C) after a two-day incubation (Table ). The observation is consistent with previous reports that at incubation temperatures near the PET glass transition temperature (Tg ~67-81 ºC) the enzyme activity increases on degrading the polymer, possibly due to increased structural lability resulting in more scissile bonds being accessible for hydrolysis. On a timescale of hours, traces of monomers were detected. Within two days of incubation, LCC was observed to be optimal for PET degradation (1120±53 μmol TPA/EG gsub -1 at 65 °C), whereas Dura is optimal for PCL (56±2 μmol HA gsub -1 at 37 °C; Figure ). Compared to alkaline pre-treatment (2 M aq. NaOH) at identical incubation conditions after two days on PET and PCL films, higher monomer yields were observed for enzymatic pre-treatment on both polyesters (Table ). Moreover, waste plastics in different sizes are amenable to enzymatic pre-treatment. Both LCC and Dura exhibit degradation activity on PET and PCL nanoplastics (⌀ 130-185 nm, NP) with an increase in mole yield to a substrate-mass ratio of ~4-fold for PET and ~8-fold for PCL after a 2-day incubation compared to those with films (Table ).