期刊
MATERIALS & DESIGN
卷 205, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2021.109705
关键词
Helical; Groove; hollow; Multicomponent nanofibers; Tri-fluid electrospinning; Multilevel structure
资金
- National Natural Science Foundation of China [11672073]
- Fundamental Research Funds for the Central Universities
- Graduate Student Innovation Fund of Donghua University [CUSF-DH-D-2020027]
In this study, a new type of multilevel structured nanofibers with helical and groove/hollow structures were prepared using a designed tri-fluid electrospinning system. By adjusting the capillary dispositions of the spinneret, fibers with helical groove and helical hollow structures were obtained. The unique helical groove/hollow structure exhibited good properties in wettability and mechanical behavior, demonstrating the potential for various applications.
Electrospinning of multilevel structured micro/nanofibers have obtained considerable attention recently. In this study, inspired by the unique properties and functions of helical, groove and hollow structures in nature, we prepared a new type of multilevel structured nanofibers with helical and groove/hollow structures. Based on the fiber formation mechanism, a combination of cellulose acetate and other appropriate polymers were applied to generate helical groove/hollow nanofibers using a designed tri-fluid electrospinning system. By varying the capillary dispositions of the spinneret, the fibers with helical groove and helical hollow structures were obtained. To explore the forming process of the composite fibers, high speed photography was employed to record the Taylor cone and jet path under the spinnerets. By characterizing the morphologies and specific functions of the as-prepared nanofibers, the unique helical groove/hollow structure were generated and present good properties in wettability and mechanical behavior. (c) 2021 The Authors. Published by Elsevier Ltd. 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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