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. 2023 Jul 29;16(15):5339. doi: 10.3390/ma16155339

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© 2023 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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(a) Technical diagram of melt extrusion [54]; (b,c) technical diagram of biaxial stretching method [45,54]; (d) technical diagram of electrospinning [54]; and (e) the characteristics, structures and applications of electrospinning fibers with different structural designs [56].