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. 2019 Dec 12;25(23-24):1577–1590. doi: 10.1089/ten.tea.2018.0319

FIG. 1.

FIG. 1.

Overview of coaxial electrospinning. (A) A rotating drum collector was used to deposit aligned electrospun fibers; (B) Photographs of the coaxial nozzle and cross-section of coaxial nozzle tip (inset). (C) TEM image of an individual coaxial nanofiber with a core of PLA and a shell of collagen (Mag.: 26,000 × ; scale bar: 100 nm). SEM (Mag.: 2500 × ; scale bar: 5 μm) of (D) noncrosslinked coaxial fibers; (E) crosslinked coaxial fibers with glutaraldehyde; (F) noncrosslinked coaxial fibers and (G) crosslinked coaxial fibers after 2 h exposure to culture medium at incubator. Mag., magnification; PLA, polylactic acid; SEM, scanning electron microscopy; TEM, transmission electron microscopy. Color images are available online.