Enzymatic Degradability of PLA Stereoisomers and Their Blends

FIGURE 22.5 Enzymatic hydrolysis rate of PLA stereocopolymer films as functions of the content of L-lactyl unit (Xlla) and of the average sequential length of L-lactyl unit (/l) or D-lactyl unit (/d). The values of /l and /d are calculated by using following equations /l = 2/(1 — Ylla) and = 2/Xlla- Reprinted with permission from Ref. 12. Copyright 2001, American Chemical Society. 

---