Chin. Phys. Lett.  2011, Vol. 28 Issue (5): 056801    DOI: 10.1088/0256-307X/28/5/056801
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Preparation of Curled Microfibers by Electrospinning with Tip Collector
TANG Cheng-Chun, CHEN Jun-Chi, LONG Yun-Ze**, YIN Hong-Xing, SUN Bin, ZHANG Hong-Di
College of Physics Science, Qingdao University, Qingdao 266071
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TANG Cheng-Chun, CHEN Jun-Chi, LONG Yun-Ze et al  2011 Chin. Phys. Lett. 28 056801
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Abstract We report on curled polyvinylpyrrolidone (PVP) microfibers fabricated by a modified electrospinning with a small nail as the tip collector. PVP (45 wt%) ethanol solution is electrospun under different working voltages ranging from 10 to 15, 20, 30 and 40 kV. It is found that with the increase of working voltage, the proportion of the curled fibers increases and the uniformity of the curled fibers improves, as well as the repeat distance of the curled structures reducing. Particularly, some curled fibers develop into helical structures under relatively high voltages. Further analyses indicate that the formation mechanism for the curled polymer fibers can be ascribed to electrical driven bending instability and/or mechanical jet buckling when hitting the collector surface. This modified electrospinning technique may be a cost-effective approach for the mass production of curled microfibers.
Keywords: 68.47.Mn      81.05.Lg     
Received: 13 September 2010      Published: 26 April 2011
PACS:  68.47.Mn (Polymer surfaces)  
  81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/5/056801       OR      https://cpl.iphy.ac.cn/Y2011/V28/I5/056801
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Articles by authors
TANG Cheng-Chun
CHEN Jun-Chi
LONG Yun-Ze
YIN Hong-Xing
SUN Bin
ZHANG Hong-Di
[1] Lu X F, Wang C and Wei Y 2009 Small 5 2349
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