Fabrication and formation mechanism of closed-loop fibers by electrospinning with a tip collector

Electrospun nanofibers with designed or controlled structures have drawn much attention. In this study, we report an interesting new closed-loop structure in individual cerium nitrate/polyvinyl alcohol（Ce（NO3）3/PVA） and Na Cl/PVA fibers,which are fabricated by electrospinning with a nail collector....

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Published inChinese physics B Vol. 25; no. 7; pp. 505 - 508
Main Author 闫旭 于淼 韩文鹏 犹明浩 张君诚 董瑞华 张红娣 龙云泽
Format Journal Article
LanguageEnglish
Published 01.07.2016
Subjects
光纤
制备
形成机理
浓度检测
纳米纤维
聚乙烯醇纤维
闭环结构
静电纺丝法
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Summary:Electrospun nanofibers with designed or controlled structures have drawn much attention. In this study, we report an interesting new closed-loop structure in individual cerium nitrate/polyvinyl alcohol（Ce（NO3）3/PVA） and Na Cl/PVA fibers,which are fabricated by electrospinning with a nail collector. The electrospinning parameters such as voltage and Ce（NO3）3（or Na Cl） concentration are examined for the formation of the closed-loop structure. The results suggest that the increase of the spinning voltage or addition of Ce（NO3）3（or Na Cl） is favorable for the formation of the closed-loop structure, and the increase of loop numbers and the decrease of loop size. Further analyses indicate that the formation mechanism of the closed-loop fibers can be predominantly attributed to the Coulomb repulsion in the charged jets.
Bibliography:electrospinning nail collector closed-loop fiber Coulomb repulsion
11-5639/O4
Electrospun nanofibers with designed or controlled structures have drawn much attention. In this study, we report an interesting new closed-loop structure in individual cerium nitrate/polyvinyl alcohol（Ce（NO3）3/PVA） and Na Cl/PVA fibers,which are fabricated by electrospinning with a nail collector. The electrospinning parameters such as voltage and Ce（NO3）3（or Na Cl） concentration are examined for the formation of the closed-loop structure. The results suggest that the increase of the spinning voltage or addition of Ce（NO3）3（or Na Cl） is favorable for the formation of the closed-loop structure, and the increase of loop numbers and the decrease of loop size. Further analyses indicate that the formation mechanism of the closed-loop fibers can be predominantly attributed to the Coulomb repulsion in the charged jets.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/25/7/078106