中国物理B ›› 2016, Vol. 25 ›› Issue (7): 78106-078106.doi: 10.1088/1674-1056/25/7/078106
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Xu Yan(闫旭), Miao Yu(于淼), Wen-Peng Han(韩文鹏), Ming-Hao You(犹明浩), Jun-Cheng Zhang(张君诚), Rui-Hua Dong(董瑞华), Hong-Di Zhang(张红娣), Yun-Ze Long(龙云泽)
Xu Yan(闫旭)1, Miao Yu(于淼)1,2, Wen-Peng Han(韩文鹏)1, Ming-Hao You(犹明浩)1, Jun-Cheng Zhang(张君诚)1, Rui-Hua Dong(董瑞华)1, Hong-Di Zhang(张红娣)1, Yun-Ze Long(龙云泽)1,3
摘要: 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 NaCl/PVA fibers, which are fabricated by electrospinning with a nail collector. The electrospinning parameters such as voltage and Ce(NO3)3 (or NaCl) 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 NaCl) 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.
中图分类号: (Nanoscale materials and structures: fabrication and characterization)