Evaluation of Ibuprofen Prolonged Release of Biomedical PLA-PEG-PLA Hydrogel via Degradation Mechanism

Figure 2

TEM images of PLA₁₇₅₀-PEG₁₇₅₀-PLA₁₇₅₀ copolymer: (a) high magnification and (b) low magnification.

(a)

(b)