Novel Poly(L-lactide-co-ε-caprolactone) Matrices Obtained with the Use of Zr[Acac]4 as Nontoxic Initiator for Long-Term Release of Immunosuppressive Drugs
Figure 5
13C NMR spectra of matrices made of less random PLACL 75 : 25: (a) with CyA; (b) with rapamycine; (c) without drug, before degradation (A) and after 14 (B), 35 (C), 70 (D) and 182 (E) days of degradation. Carbonyl carbon region of ε-oxycaproyl unit: (1) CapCapCap; (2) LLCapCap; (3) CapCapLL; (4) LLCapLL; and carbonyl carbon region of lactidyl unit (5) LLLLCap; (6) CapLLCap; (7) CapLLLL; (8) LLLLCap; (9) LLLLLL.
