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. 2022 Mar 24;14:100243. doi: 10.1016/j.mtbio.2022.100243

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© 2022 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 1 — Preparation and morphological characterization of nanoyarns with different SF/PLLA mass ratios. (a) Schematic of novel electrospinning system with one nanoyarn-forming unit and one hot stretching unit. (b) SEM images of four different hot stretched SF/PLLA nanoyarns. Scale bars for top panel: 100 μm. Scale bars for bottom panel: 2.5 μm. Quantitative analysis of (c) fiber orientation angular distribution and (d) yarn diameter and nanofiber diameter in four different hot stretched SF/PLLA nanoyarns.