Development of a Composite Electrospun Polyethylene Terephthalate-Polyglycolic Acid Material: Potential Use as a Drug-Eluting Vascular Graft

Figure 1

Evaluation of surface morphology of control and electrospun materials via SEM: representative SEM pictures of PTFE and ePET (a and b). SEM analysis of ePGA fiber degradation as a single or a composite material with PET. ePGA fibers gradually degrade over 14–21 days in PBS (c and d). In contrast, after ePGA degradation the ePET/ePGA-s (e) or ePET/ePGA-d materials (f) still have a fibrous composition due to the nondegrading ePET fibers. Note the strand breaks in the ePET/ePGA-s group (presumably due to PGA degradation) while no strand breaks occurred in the ePET/ePGA-d group.

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