Enzymatic depolymerization of highly crystalline ...
· The jar was mounted on a ball mill, before milling at a frequency of 30 Hz for 5 min. The resulting solids were aliquoted into three parts, 10 to 50 mg each, for analysis of the reaction products by HPLC at three time points: 1) after milling, 2) after milling followed by 3 d of aging at 55 °C, and 3) after milling followed by 7 d of aging at 55 °C.