Leaching tests were conducted utilizing the 3 cm 2 .mL -1 surface area-to-volume ratio approach established in ISO10993-12. Sheets of polymer were cut into 3 cm 2 pieces, placed in a 1.5 mL tube, then immersed in 1 mL of PBS for 7 days at 37 °C. Next, the pieces were removed and the PBS transmission was measured with a UV spectrometer (Agilent Cary 60 UV-Vis Spectrophotometer).