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. 2021 Nov 18;13(22):3987. doi: 10.3390/polym13223987

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Scanning electron microscopy (SEM) images of electrospun of TPU, TPU/ZnO, TPU/CuO and nanofiber diameter distribution histograms. (A) TPU; (B) TPU/ZnO 2 wt%; (C) TPU/ZnO 4 wt%; (D) TPU/CuO 2 wt%; (E) TPU/CuO 4 wt%.

Scanning electron microscopy (SEM) images of electrospun of TPU, TPU/ZnO, TPU/CuO and nanofiber diameter distribution histograms. (A) TPU; (B) TPU/ZnO 2 wt%; (C) TPU/ZnO 4 wt%; (D) TPU/CuO 2 wt%; (E) TPU/CuO 4 wt%.