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Nanomaterials 2017, 7(9), 277; doi:10.3390/nano7090277

Fabrication of Magnetic Nanofibers by Needleless Electrospinning from a Self-Assembling Polymer Ferrofluid Cone Array

1
School of Engineering, Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, Sun Yat-Sen University, Guangzhou 510006, China
2
School of Physics, Sun Yat-Sen University, Guangzhou 510275, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 20 August 2017 / Revised: 12 September 2017 / Accepted: 13 September 2017 / Published: 17 September 2017
(This article belongs to the Special Issue The Fabrication and Application of Nanofibers)
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Abstract

Magnetic nanofiber has been widely applied in biomedical fields due to its distinctive size, morphology, and properties. We proposed a novel needleless electrospinning method to prepare magnetic nanofibers from the self-assembling “Taylor cones” of poly(vinyl pyrrolidone) (PVP)/Fe3O4 ferrofluid (PFF) under the coincident magnetic and electric fields. The results demonstrated that a static PFF Rosensweig instability with a conical protrusion could be obtained under the magnetic field. The tip of the protrusion emitted an electrospinning jet under the coincident magnetic and electric fields. The needleless electrospinning showed a similar process phenomenon in comparison with conventional electrospinning. The prepared nanofibers were composed of Fe3O4 particles and PVP polymer. The Fe3O4 particles aggregated inside and on the surface of the nanofibers. The nanofibers prepared by needleless electrospinning exhibited similar morphology compared with the conventionally electrospun nanofibers. The nanofibers also exhibited good ferromagnetic and magnetic field responsive properties. View Full-Text
Keywords: ferrofluid; self-assembling; needleless electrospinning; magnetic nanofibers ferrofluid; self-assembling; needleless electrospinning; magnetic nanofibers
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MDPI and ACS Style

Huang, W.; Liu, B.; Chen, Z.; Wang, H.; Ren, L.; Jiao, J.; Zhuang, L.; Luo, J.; Jiang, L. Fabrication of Magnetic Nanofibers by Needleless Electrospinning from a Self-Assembling Polymer Ferrofluid Cone Array. Nanomaterials 2017, 7, 277.

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